139534031690 has 32 divisors (see below), whose sum is σ = 262114068096. Its totient is φ = 53380261440.

The previous prime is 139534031627. The next prime is 139534031729. The reversal of 139534031690 is 96130435931.

It is a super-2 number, since 2×139534031690² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 2057564 + ... + 2124296.

It is an arithmetic number, because the mean of its divisors is an integer number (8191064628).

Almost surely, 2^139534031690 is an apocalyptic number.

139534031690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139534031690 is a deficient number, since it is larger than the sum of its proper divisors (122580036406).

139534031690 is a wasteful number, since it uses less digits than its factorization.

139534031690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75854.

The product of its (nonzero) digits is 262440, while the sum is 44.

The spelling of 139534031690 in words is "one hundred thirty-nine billion, five hundred thirty-four million, thirty-one thousand, six hundred ninety".