77113504311887 has 4 divisors (see below), whose sum is σ = 77113559533080. Its totient is φ = 77113449090696.

The previous prime is 77113504311863. The next prime is 77113504311889. The reversal of 77113504311887 is 78811340531177.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77113504311887 - 2¹⁶ = 77113504246351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77113504311889) 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, 25460093 + ... + 28327430.

It is an arithmetic number, because the mean of its divisors is an integer number (19278389883270).

Almost surely, 2^{77113504311887} is an apocalyptic number.

77113504311887 is a deficient number, since it is larger than the sum of its proper divisors (55221193).

77113504311887 is a wasteful number, since it uses less digits than its factorization.

77113504311887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55221192.

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 77113504311887 in words is "seventy-seven trillion, one hundred thirteen billion, five hundred four million, three hundred eleven thousand, eight hundred eighty-seven".