3139457529861 has 12 divisors (see below), whose sum is σ = 4540461799692. Its totient is φ = 2090345619456.

The previous prime is 3139457529851. The next prime is 3139457529869. The reversal of 3139457529861 is 1689257549313.

3139457529861 is a `hidden beast` number, since 3 + 1 + 3 + 9 + 45 + 7 + 529 + 8 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2443391028225 + 696066501636 = 1563135^2 + 834306^2 .

It is not a de Polignac number, because 3139457529861 - 2¹⁷ = 3139457398789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139457529869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218831356 + ... + 218845701.

It is an arithmetic number, because the mean of its divisors is an integer number (378371816641).

Almost surely, 2^{3139457529861} is an apocalyptic number.

It is an amenable number.

3139457529861 is a deficient number, since it is larger than the sum of its proper divisors (1401004269831).

3139457529861 is a wasteful number, since it uses less digits than its factorization.

3139457529861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437677860 (or 437677857 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 3139457529861 in words is "three trillion, one hundred thirty-nine billion, four hundred fifty-seven million, five hundred twenty-nine thousand, eight hundred sixty-one".