78711051752 has 16 divisors (see below), whose sum is σ = 150367811940. Its totient is φ = 38612968576.

The previous prime is 78711051737. The next prime is 78711051779. The reversal of 78711051752 is 25715011787.

It can be written as a sum of positive squares in 2 ways, for example, as 64580023876 + 14131027876 = 254126^2 + 118874^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92819213 + ... + 92820060.

Almost surely, 2^78711051752 is an apocalyptic number.

It is an amenable number.

78711051752 is a deficient number, since it is larger than the sum of its proper divisors (71656760188).

78711051752 is a wasteful number, since it uses less digits than its factorization.

78711051752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185639332 (or 185639328 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 44.

The spelling of 78711051752 in words is "seventy-eight billion, seven hundred eleven million, fifty-one thousand, seven hundred fifty-two".