78311035861053 has 4 divisors (see below), whose sum is σ = 104414714481408. Its totient is φ = 52207357240700.

The previous prime is 78311035861043. The next prime is 78311035861081. The reversal of 78311035861053 is 35016853011387.

It is a happy number.

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 78311035861053 - 2¹⁴ = 78311035844669 is a prime.

It is a super-2 number, since 2×78311035861053² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78311035860987 and 78311035861005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78311035861043) 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, 13051839310173 + ... + 13051839310178.

It is an arithmetic number, because the mean of its divisors is an integer number (26103678620352).

Almost surely, 2^{78311035861053} is an apocalyptic number.

It is an amenable number.

78311035861053 is a deficient number, since it is larger than the sum of its proper divisors (26103678620355).

78311035861053 is a wasteful number, since it uses less digits than its factorization.

78311035861053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26103678620354.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 78311035861053 in words is "seventy-eight trillion, three hundred eleven billion, thirty-five million, eight hundred sixty-one thousand, fifty-three".