51153356617 has 4 divisors (see below), whose sum is σ = 55803661776. Its totient is φ = 46503051460.

The previous prime is 51153356591. The next prime is 51153356627. The reversal of 51153356617 is 71665335115.

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.

It is a cyclic number.

It is not a de Polignac number, because 51153356617 - 2¹⁵ = 51153323849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51153356627) 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, 2325152563 + ... + 2325152584.

It is an arithmetic number, because the mean of its divisors is an integer number (13950915444).

Almost surely, 2^51153356617 is an apocalyptic number.

It is an amenable number.

51153356617 is a deficient number, since it is larger than the sum of its proper divisors (4650305159).

51153356617 is a wasteful number, since it uses less digits than its factorization.

51153356617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650305158.

The product of its digits is 283500, while the sum is 43.

The spelling of 51153356617 in words is "fifty-one billion, one hundred fifty-three million, three hundred fifty-six thousand, six hundred seventeen".