78363553107 has 24 divisors (see below), whose sum is σ = 126848509696. Its totient is φ = 42145100928.

The previous prime is 78363553097. The next prime is 78363553201. The reversal of 78363553107 is 70135536387.

It is not a de Polignac number, because 78363553107 - 2⁶ = 78363553043 is a prime.

It is a super-2 number, since 2×78363553107² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78363552107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6449983 + ... + 6462120.

Almost surely, 2^78363553107 is an apocalyptic number.

78363553107 is a deficient number, since it is larger than the sum of its proper divisors (48484956589).

78363553107 is a wasteful number, since it uses less digits than its factorization.

78363553107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912147 (or 12912130 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 78363553107 in words is "seventy-eight billion, three hundred sixty-three million, five hundred fifty-three thousand, one hundred seven".