87702111120778 has 64 divisors (see below), whose sum is σ = 164708506045440. Its totient is φ = 34025102640000.

The previous prime is 87702111120773. The next prime is 87702111120857.

87702111120778 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87702111120773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157159213 + ... + 157716271.

It is an arithmetic number, because the mean of its divisors is an integer number (2573570406960).

Almost surely, 2^{87702111120778} is an apocalyptic number.

87702111120778 is a deficient number, since it is larger than the sum of its proper divisors (77006394924662).

87702111120778 is a wasteful number, since it uses less digits than its factorization.

87702111120778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561403.

The product of its (nonzero) digits is 614656, while the sum is 52.

It can be divided in two parts, 8770211 and 1120778, that added together give a palindrome (9890989).

The spelling of 87702111120778 in words is "eighty-seven trillion, seven hundred two billion, one hundred eleven million, one hundred twenty thousand, seven hundred seventy-eight".