139547884021 has 32 divisors (see below), whose sum is σ = 176499384320. Its totient is φ = 107362734336.

The previous prime is 139547884019. The next prime is 139547884027. The reversal of 139547884021 is 120488745931.

It is not a de Polignac number, because 139547884021 - 2¹ = 139547884019 is a prime.

It is a super-2 number, since 2×139547884021² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139547884021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139547884027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6011980 + ... + 6035146.

It is an arithmetic number, because the mean of its divisors is an integer number (5515605760).

Almost surely, 2^139547884021 is an apocalyptic number.

It is an amenable number.

139547884021 is a deficient number, since it is larger than the sum of its proper divisors (36951500299).

139547884021 is a wasteful number, since it uses less digits than its factorization.

139547884021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25013.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 139547884021 in words is "one hundred thirty-nine billion, five hundred forty-seven million, eight hundred eighty-four thousand, twenty-one".