77786131513102 has 8 divisors (see below), whose sum is σ = 116679528569016. Its totient is φ = 38892955323432.

The previous prime is 77786131513093. The next prime is 77786131513159. The reversal of 77786131513102 is 20131513168777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77786131513102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54333268 + ... + 55746535.

It is an arithmetic number, because the mean of its divisors is an integer number (14584941071127).

Almost surely, 2^{77786131513102} is an apocalyptic number.

77786131513102 is a deficient number, since it is larger than the sum of its proper divisors (38893397055914).

77786131513102 is a wasteful number, since it uses less digits than its factorization.

77786131513102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110433122.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 77786131513102 in words is "seventy-seven trillion, seven hundred eighty-six billion, one hundred thirty-one million, five hundred thirteen thousand, one hundred two".