78504381172340 has 12 divisors (see below), whose sum is σ = 164859200461956. Its totient is φ = 31401752468928.

The previous prime is 78504381172307. The next prime is 78504381172351. The reversal of 78504381172340 is 4327118340587.

It can be written as a sum of positive squares in 2 ways, for example, as 53591125795216 + 24913255377124 = 7320596^2 + 4991318^2 .

It is a congruent number.

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, 1962609529289 + ... + 1962609529328.

It is an arithmetic number, because the mean of its divisors is an integer number (13738266705163).

Almost surely, 2^{78504381172340} is an apocalyptic number.

It is an amenable number.

78504381172340 is an abundant number, since it is smaller than the sum of its proper divisors (86354819289616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78504381172340 is a wasteful number, since it uses less digits than its factorization.

78504381172340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925219058626 (or 3925219058624 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 78504381172340 in words is "seventy-eight trillion, five hundred four billion, three hundred eighty-one million, one hundred seventy-two thousand, three hundred forty".