78562256464 has 20 divisors (see below), whose sum is σ = 154486230304. Its totient is φ = 38694842208.

The previous prime is 78562256453. The next prime is 78562256467. The reversal of 78562256464 is 46465226587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78562256467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36641772 + ... + 36643915.

Almost surely, 2^78562256464 is an apocalyptic number.

It is an amenable number.

78562256464 is a deficient number, since it is larger than the sum of its proper divisors (75923973840).

78562256464 is a wasteful number, since it uses less digits than its factorization.

78562256464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73285762 (or 73285756 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 55.

The spelling of 78562256464 in words is "seventy-eight billion, five hundred sixty-two million, two hundred fifty-six thousand, four hundred sixty-four".