137979397507 has 8 divisors (see below), whose sum is σ = 165990252800. Its totient is φ = 112043420424.

The previous prime is 137979397487. The next prime is 137979397537. The reversal of 137979397507 is 705793979731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137979397507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137979397537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518719407 + ... + 518719672.

It is an arithmetic number, because the mean of its divisors is an integer number (20748781600).

Almost surely, 2^137979397507 is an apocalyptic number.

137979397507 is a deficient number, since it is larger than the sum of its proper divisors (28010855293).

137979397507 is a wasteful number, since it uses less digits than its factorization.

137979397507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037439105.

The product of its (nonzero) digits is 78764805, while the sum is 67.

The spelling of 137979397507 in words is "one hundred thirty-seven billion, nine hundred seventy-nine million, three hundred ninety-seven thousand, five hundred seven".