77934033121 has 4 divisors (see below), whose sum is σ = 89067466432. Its totient is φ = 66800599812.

The previous prime is 77934033097. The next prime is 77934033127. The reversal of 77934033121 is 12133043977.

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 77934033121 - 2³³ = 69344098529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77934033127) 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, 5566716645 + ... + 5566716658.

It is an arithmetic number, because the mean of its divisors is an integer number (22266866608).

Almost surely, 2^77934033121 is an apocalyptic number.

It is an amenable number.

77934033121 is a deficient number, since it is larger than the sum of its proper divisors (11133433311).

77934033121 is a wasteful number, since it uses less digits than its factorization.

77934033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133433310.

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 77934033121 in words is "seventy-seven billion, nine hundred thirty-four million, thirty-three thousand, one hundred twenty-one".