139705251144 has 64 divisors (see below), whose sum is σ = 358021036800. Its totient is φ = 45408067584.

The previous prime is 139705251113. The next prime is 139705251149. The reversal of 139705251144 is 441152507931.

It is a super-2 number, since 2×139705251144² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139705251096 and 139705251105.

It is not an unprimeable number, because it can be changed into a prime (139705251149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73224 + ... + 533640.

It is an arithmetic number, because the mean of its divisors is an integer number (5594078700).

Almost surely, 2^139705251144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139705251144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179010518400).

139705251144 is an abundant number, since it is smaller than the sum of its proper divisors (218315785656).

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

139705251144 is a wasteful number, since it uses less digits than its factorization.

139705251144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460742 (or 460738 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 139705251144 in words is "one hundred thirty-nine billion, seven hundred five million, two hundred fifty-one thousand, one hundred forty-four".