139520665364 has 12 divisors (see below), whose sum is σ = 246443045184. Its totient is φ = 69108366744.

The previous prime is 139520665327. The next prime is 139520665379. The reversal of 139520665364 is 463566025931.

It is a super-2 number, since 2×139520665364² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162991004 + ... + 162991859.

It is an arithmetic number, because the mean of its divisors is an integer number (20536920432).

Almost surely, 2^139520665364 is an apocalyptic number.

It is an amenable number.

139520665364 is a deficient number, since it is larger than the sum of its proper divisors (106922379820).

139520665364 is a wasteful number, since it uses less digits than its factorization.

139520665364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325982974 (or 325982972 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 139520665364 in words is "one hundred thirty-nine billion, five hundred twenty million, six hundred sixty-five thousand, three hundred sixty-four".