137696121640 has 64 divisors (see below), whose sum is σ = 386264453760. Its totient is φ = 42918270720.

The previous prime is 137696121623. The next prime is 137696121649. The reversal of 137696121640 is 46121696731.

It is not an unprimeable number, because it can be changed into a prime (137696121649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22350187 + ... + 22356346.

It is an arithmetic number, because the mean of its divisors is an integer number (6035382090).

Almost surely, 2^137696121640 is an apocalyptic number.

137696121640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137696121640 is an abundant number, since it is smaller than the sum of its proper divisors (248568332120).

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

137696121640 is a wasteful number, since it uses less digits than its factorization.

137696121640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44706562 (or 44706558 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 137696121640 in words is "one hundred thirty-seven billion, six hundred ninety-six million, one hundred twenty-one thousand, six hundred forty".