137405065640 has 64 divisors (see below), whose sum is σ = 344576203200. Its totient is φ = 49006384128.

The previous prime is 137405065639. The next prime is 137405065643. The reversal of 137405065640 is 46560504731.

It is not an unprimeable number, because it can be changed into a prime (137405065643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5304614 + ... + 5330453.

It is an arithmetic number, because the mean of its divisors is an integer number (5384003175).

Almost surely, 2^137405065640 is an apocalyptic number.

137405065640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137405065640 is an abundant number, since it is smaller than the sum of its proper divisors (207171137560).

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

137405065640 is a wasteful number, since it uses less digits than its factorization.

137405065640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10635114 (or 10635110 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 137405065640 in words is "one hundred thirty-seven billion, four hundred five million, sixty-five thousand, six hundred forty".