137698564379 has 4 divisors (see below), whose sum is σ = 138289545576. Its totient is φ = 137107583184.

The previous prime is 137698564361. The next prime is 137698564387. The reversal of 137698564379 is 973465896731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973465896731 = 31 ⋅31402125701.

It is a cyclic number.

It is not a de Polignac number, because 137698564379 - 2¹⁶ = 137698498843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130698564379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295490249 + ... + 295490714.

It is an arithmetic number, because the mean of its divisors is an integer number (34572386394).

Almost surely, 2^137698564379 is an apocalyptic number.

137698564379 is a deficient number, since it is larger than the sum of its proper divisors (590981197).

137698564379 is an equidigital number, since it uses as much as digits as its factorization.

137698564379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590981196.

The product of its digits is 205752960, while the sum is 68.

The spelling of 137698564379 in words is "one hundred thirty-seven billion, six hundred ninety-eight million, five hundred sixty-four thousand, three hundred seventy-nine".