139345319961 has 12 divisors (see below), whose sum is σ = 201285897280. Its totient is φ = 92892576600.

The previous prime is 139345319923. The next prime is 139345319969. The reversal of 139345319961 is 169913543931.

139345319961 is a `hidden beast` number, since 1 + 3 + 93 + 453 + 19 + 96 + 1 = 666.

It is not a de Polignac number, because 139345319961 - 2²² = 139341125657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139345319898 and 139345319907.

It is not an unprimeable number, because it can be changed into a prime (139345319969) 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, 146965 + ... + 547986.

Almost surely, 2^139345319961 is an apocalyptic number.

It is an amenable number.

139345319961 is a deficient number, since it is larger than the sum of its proper divisors (61940577319).

139345319961 is a wasteful number, since it uses less digits than its factorization.

139345319961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717236 (or 717233 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 54.

The spelling of 139345319961 in words is "one hundred thirty-nine billion, three hundred forty-five million, three hundred nineteen thousand, nine hundred sixty-one".