78902085606400 has 132 divisors (see below), whose sum is σ = 223521859718608. Its totient is φ = 27052143575040.

The previous prime is 78902085606397. The next prime is 78902085606403. The reversal of 78902085606400 is 460658020987.

It is an interprime number because it is at equal distance from previous prime (78902085606397) and next prime (78902085606403).

It is a super-2 number, since 2×78902085606400² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78902085606403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219971709 + ... + 220330108.

Almost surely, 2^{78902085606400} is an apocalyptic number.

78902085606400 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78902085606400 is an abundant number, since it is smaller than the sum of its proper divisors (144619774112208).

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

78902085606400 is a wasteful number, since it uses less digits than its factorization.

78902085606400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440301854 (or 440301831 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 78902085606400 in words is "seventy-eight trillion, nine hundred two billion, eighty-five million, six hundred six thousand, four hundred".