137244126640 has 80 divisors (see below), whose sum is σ = 346994299872. Its totient is φ = 50271916032.

The previous prime is 137244126637. The next prime is 137244126661. The reversal of 137244126640 is 46621442731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 137244126593 and 137244126602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313394 + ... + 1414033.

Almost surely, 2^137244126640 is an apocalyptic number.

137244126640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137244126640 is an abundant number, since it is smaller than the sum of its proper divisors (209750173232).

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

137244126640 is a wasteful number, since it uses less digits than its factorization.

137244126640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727494 (or 2727488 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 137244126640 in words is "one hundred thirty-seven billion, two hundred forty-four million, one hundred twenty-six thousand, six hundred forty".