139965812400 has 60 divisors (see below), whose sum is σ = 448357156232. Its totient is φ = 37324216320.

The previous prime is 139965812381. The next prime is 139965812431. The reversal of 139965812400 is 4218569931.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 139965812400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58317889 + ... + 58320288.

Almost surely, 2^139965812400 is an apocalyptic number.

139965812400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139965812400 is an abundant number, since it is smaller than the sum of its proper divisors (308391343832).

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

139965812400 is a wasteful number, since it uses less digits than its factorization.

139965812400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116638198 (or 116638187 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 139965812400 in words is "one hundred thirty-nine billion, nine hundred sixty-five million, eight hundred twelve thousand, four hundred".