78902062740 has 60 divisors (see below), whose sum is σ = 247518698196. Its totient is φ = 21040549632.

The previous prime is 78902062703. The next prime is 78902062763. The reversal of 78902062740 is 4726020987.

It can be written as a sum of positive squares in 2 ways, for example, as 61265160324 + 17636902416 = 247518^2 + 132804^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24350869 + ... + 24354108.

Almost surely, 2^78902062740 is an apocalyptic number.

It is an amenable number.

78902062740 is an abundant number, since it is smaller than the sum of its proper divisors (168616635456).

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

78902062740 is a wasteful number, since it uses less digits than its factorization.

78902062740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48704998 (or 48704987 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 78902062740 in words is "seventy-eight billion, nine hundred two million, sixty-two thousand, seven hundred forty".