137947781630 has 16 divisors (see below), whose sum is σ = 262912242960. Its totient is φ = 51933282432.

The previous prime is 137947781627. The next prime is 137947781639. The reversal of 137947781630 is 36187749731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137947781639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405728600 + ... + 405728939.

It is an arithmetic number, because the mean of its divisors is an integer number (16432015185).

Almost surely, 2^137947781630 is an apocalyptic number.

137947781630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137947781630 is a deficient number, since it is larger than the sum of its proper divisors (124964461330).

137947781630 is a wasteful number, since it uses less digits than its factorization.

137947781630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811457563.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The spelling of 137947781630 in words is "one hundred thirty-seven billion, nine hundred forty-seven million, seven hundred eighty-one thousand, six hundred thirty".