78152050846640 has 160 divisors (see below), whose sum is σ = 184194752495616. Its totient is φ = 30835856563200.

The previous prime is 78152050846609. The next prime is 78152050846651. The reversal of 78152050846640 is 4664805025187.

It is a super-2 number, since 2×78152050846640² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1050210074 + ... + 1050284486.

Almost surely, 2^{78152050846640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78152050846640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92097376247808).

78152050846640 is an abundant number, since it is smaller than the sum of its proper divisors (106042701648976).

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

78152050846640 is a wasteful number, since it uses less digits than its factorization.

78152050846640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75187 (or 75181 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 78152050846640 in words is "seventy-eight trillion, one hundred fifty-two billion, fifty million, eight hundred forty-six thousand, six hundred forty".