78400882614840 has 64 divisors (see below), whose sum is σ = 240672476880000. Its totient is φ = 20420695005312.

The previous prime is 78400882614827. The next prime is 78400882614913. The reversal of 78400882614840 is 4841628800487.

It is a super-2 number, since 2×78400882614840² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7596979590 + ... + 7596989909.

It is an arithmetic number, because the mean of its divisors is an integer number (3760507451250).

Almost surely, 2^{78400882614840} is an apocalyptic number.

It is an amenable number.

78400882614840 is an abundant number, since it is smaller than the sum of its proper divisors (162271594265160).

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

78400882614840 is a wasteful number, since it uses less digits than its factorization.

78400882614840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15193969556 (or 15193969552 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 60.

The spelling of 78400882614840 in words is "seventy-eight trillion, four hundred billion, eight hundred eighty-two million, six hundred fourteen thousand, eight hundred forty".