137851116621 has 16 divisors (see below), whose sum is σ = 195591312000. Its totient is φ = 86060164608.

The previous prime is 137851116583. The next prime is 137851116629. The reversal of 137851116621 is 126611158731.

It is not a de Polignac number, because 137851116621 - 2⁷ = 137851116493 is a prime.

It is a super-4 number, since 4×137851116621⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137851116629) 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, 6781216 + ... + 6801513.

It is an arithmetic number, because the mean of its divisors is an integer number (12224457000).

Almost surely, 2^137851116621 is an apocalyptic number.

It is an amenable number.

137851116621 is a deficient number, since it is larger than the sum of its proper divisors (57740195379).

137851116621 is a wasteful number, since it uses less digits than its factorization.

137851116621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582948.

The product of its digits is 60480, while the sum is 42.

The spelling of 137851116621 in words is "one hundred thirty-seven billion, eight hundred fifty-one million, one hundred sixteen thousand, six hundred twenty-one".