139768465536 has 144 divisors (see below), whose sum is σ = 467863539390. Its totient is φ = 39933831168.

The previous prime is 139768465519. The next prime is 139768465553. The reversal of 139768465536 is 635564867931.

139768465536 is a `hidden beast` number, since 1 + 3 + 9 + 76 + 8 + 4 + 6 + 553 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (139768465519) and next prime (139768465553).

It can be written as a sum of positive squares in only one way, i.e., 116652303936 + 23116161600 = 341544^2 + 152040^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1181581 + ... + 1294476.

Almost surely, 2^139768465536 is an apocalyptic number.

139768465536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139768465536 is an abundant number, since it is smaller than the sum of its proper divisors (328095073854).

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

139768465536 is a wasteful number, since it uses less digits than its factorization.

139768465536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476091 (or 2476069 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 139768465536 in words is "one hundred thirty-nine billion, seven hundred sixty-eight million, four hundred sixty-five thousand, five hundred thirty-six".