78388037561276 has 12 divisors (see below), whose sum is σ = 137875406168808. Its totient is φ = 38995064370192.

The previous prime is 78388037561261. The next prime is 78388037561287. The reversal of 78388037561276 is 67216573088387.

It is a super-2 number, since 2×78388037561276² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (71) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49738601726 + ... + 49738603301.

It is an arithmetic number, because the mean of its divisors is an integer number (11489617180734).

Almost surely, 2^{78388037561276} is an apocalyptic number.

It is an amenable number.

78388037561276 is a deficient number, since it is larger than the sum of its proper divisors (59487368607532).

78388037561276 is a wasteful number, since it uses less digits than its factorization.

78388037561276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99477205228 (or 99477205226 counting only the distinct ones).

The product of its (nonzero) digits is 568995840, while the sum is 71.

The spelling of 78388037561276 in words is "seventy-eight trillion, three hundred eighty-eight billion, thirty-seven million, five hundred sixty-one thousand, two hundred seventy-six".