78632250881864 has 32 divisors (see below), whose sum is σ = 148744179534720. Its totient is φ = 38968450802496.

The previous prime is 78632250881861. The next prime is 78632250881903. The reversal of 78632250881864 is 46818805223687.

It is a super-2 number, since 2×78632250881864² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78632250881794 and 78632250881803.

It is not an unprimeable number, because it can be changed into a prime (78632250881861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81675119 + ... + 82632254.

It is an arithmetic number, because the mean of its divisors is an integer number (4648255610460).

Almost surely, 2^{78632250881864} is an apocalyptic number.

It is an amenable number.

78632250881864 is a deficient number, since it is larger than the sum of its proper divisors (70111928652856).

78632250881864 is a wasteful number, since it uses less digits than its factorization.

78632250881864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164307909 (or 164307905 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 68.

The spelling of 78632250881864 in words is "seventy-eight trillion, six hundred thirty-two billion, two hundred fifty million, eight hundred eighty-one thousand, eight hundred sixty-four".