77502319630961 has 4 divisors (see below), whose sum is σ = 79151305155072. Its totient is φ = 75853334106852.

The previous prime is 77502319630949. The next prime is 77502319631053. The reversal of 77502319630961 is 16903691320577.

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 a de Polignac number, because none of the positive numbers 2^k-77502319630961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77502319630961.

It is not an unprimeable number, because it can be changed into a prime (77502319630661) 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, 824492761985 + ... + 824492762078.

It is an arithmetic number, because the mean of its divisors is an integer number (19787826288768).

Almost surely, 2^{77502319630961} is an apocalyptic number.

It is an amenable number.

77502319630961 is a deficient number, since it is larger than the sum of its proper divisors (1648985524111).

77502319630961 is a wasteful number, since it uses less digits than its factorization.

77502319630961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648985524110.

The product of its (nonzero) digits is 12859560, while the sum is 59.

The spelling of 77502319630961 in words is "seventy-seven trillion, five hundred two billion, three hundred nineteen million, six hundred thirty thousand, nine hundred sixty-one".