137386576778245 has 4 divisors (see below), whose sum is σ = 164863892133900. Its totient is φ = 109909261422592.

The previous prime is 137386576778179. The next prime is 137386576778261. The reversal of 137386576778245 is 542877675683731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51830107671969 + 85556469106276 = 7199313^2 + 9249674^2 .

It is a cyclic number.

It is not a de Polignac number, because 137386576778245 - 2¹⁵ = 137386576745477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13738657677820 + ... + 13738657677829.

It is an arithmetic number, because the mean of its divisors is an integer number (41215973033475).

Almost surely, 2^{137386576778245} is an apocalyptic number.

It is an amenable number.

137386576778245 is a deficient number, since it is larger than the sum of its proper divisors (27477315355655).

137386576778245 is an equidigital number, since it uses as much as digits as its factorization.

137386576778245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27477315355654.

The product of its digits is 9957427200, while the sum is 79.

The spelling of 137386576778245 in words is "one hundred thirty-seven trillion, three hundred eighty-six billion, five hundred seventy-six million, seven hundred seventy-eight thousand, two hundred forty-five".