137344100778 has 12 divisors (see below), whose sum is σ = 297578885058. Its totient is φ = 45781366920.

The previous prime is 137344100771. The next prime is 137344100783. The reversal of 137344100778 is 877001443731.

It is a happy number.

137344100778 is a `hidden beast` number, since 137 + 3 + 441 + 0 + 0 + 7 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79353199809 + 57990900969 = 281697^2 + 240813^2 .

It is not an unprimeable number, because it can be changed into a prime (137344100771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3815113893 + ... + 3815113928.

Almost surely, 2^137344100778 is an apocalyptic number.

137344100778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

137344100778 is an abundant number, since it is smaller than the sum of its proper divisors (160234784280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137344100778 is a wasteful number, since it uses less digits than its factorization.

137344100778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630227829 (or 7630227826 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 137344100778 in words is "one hundred thirty-seven billion, three hundred forty-four million, one hundred thousand, seven hundred seventy-eight".