137661623923490 has 32 divisors (see below), whose sum is σ = 251993485753920. Its totient is φ = 54130766872000.

The previous prime is 137661623923463. The next prime is 137661623923511. The reversal of 137661623923490 is 94329326166731.

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, 55702565 + ... + 58121415.

It is an arithmetic number, because the mean of its divisors is an integer number (7874796429810).

Almost surely, 2^{137661623923490} is an apocalyptic number.

137661623923490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137661623923490 is a deficient number, since it is larger than the sum of its proper divisors (114331861830430).

137661623923490 is a wasteful number, since it uses less digits than its factorization.

137661623923490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515378.

The product of its (nonzero) digits is 52907904, while the sum is 62.

The spelling of 137661623923490 in words is "one hundred thirty-seven trillion, six hundred sixty-one billion, six hundred twenty-three million, nine hundred twenty-three thousand, four hundred ninety".