139578339402 has 16 divisors (see below), whose sum is σ = 310174087680. Its totient is φ = 46526113116.

The previous prime is 139578339379. The next prime is 139578339409. The reversal of 139578339402 is 204933875931.

139578339402 is a `hidden beast` number, since 1 + 39 + 578 + 3 + 39 + 4 + 0 + 2 = 666.

It is a super-2 number, since 2×139578339402² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2584784063 = 139578339402 / (1 + 3 + 9 + 5 + 7 + 8 + 3 + 3 + 9 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (139578339409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292391978 + ... + 1292392085.

It is an arithmetic number, because the mean of its divisors is an integer number (19385880480).

Almost surely, 2^139578339402 is an apocalyptic number.

139578339402 is an abundant number, since it is smaller than the sum of its proper divisors (170595748278).

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

139578339402 is a wasteful number, since it uses less digits than its factorization.

139578339402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584784074 (or 2584784068 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 139578339402 in words is "one hundred thirty-nine billion, five hundred seventy-eight million, three hundred thirty-nine thousand, four hundred two".