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996018386557 = 2114720466287
BaseRepresentation
bin11100111111001110101…
…00100111011001111101
310112012220020022111122111
432133213110213121331
5112304321201332212
62041321534414021
7131650156411405
oct16374724473175
93465806274574
10996018386557
1135445545a877
12141050661311
1372c0241405c
14362c971b805
151ad96e23ea7
hexe7e752767d

996018386557 has 4 divisors (see below), whose sum is σ = 1000738853056. Its totient is φ = 991297920060.

The previous prime is 996018386521. The next prime is 996018386581. The reversal of 996018386557 is 755683810699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755683810699 = 5641133962739.

It is a cyclic number.

It is not a de Polignac number, because 996018386557 - 231 = 993870902909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996018386492 and 996018386501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996018386057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360232933 + ... + 2360233354.

It is an arithmetic number, because the mean of its divisors is an integer number (250184713264).

Almost surely, 2996018386557 is an apocalyptic number.

It is an amenable number.

996018386557 is a deficient number, since it is larger than the sum of its proper divisors (4720466499).

996018386557 is a wasteful number, since it uses less digits than its factorization.

996018386557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720466498.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 996018386557 in words is "nine hundred ninety-six billion, eighteen million, three hundred eighty-six thousand, five hundred fifty-seven".

Divisors: 1 211 4720466287 996018386557