139148955492 has 48 divisors (see below), whose sum is σ = 345561112512. Its totient is φ = 43428372480.

The previous prime is 139148955479. The next prime is 139148955511. The reversal of 139148955492 is 294559841931.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1727734 + ... + 1806477.

It is an arithmetic number, because the mean of its divisors is an integer number (7199189844).

Almost surely, 2^139148955492 is an apocalyptic number.

139148955492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139148955492 is an abundant number, since it is smaller than the sum of its proper divisors (206412157020).

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

139148955492 is a wasteful number, since it uses less digits than its factorization.

139148955492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534428 (or 3534426 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 60.

The spelling of 139148955492 in words is "one hundred thirty-nine billion, one hundred forty-eight million, nine hundred fifty-five thousand, four hundred ninety-two".