137947781629 has 16 divisors (see below), whose sum is σ = 159697612800. Its totient is φ = 116709591024.

The previous prime is 137947781627. The next prime is 137947781639. The reversal of 137947781629 is 926187749731.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 137947781629 - 2¹ = 137947781627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137947781627) 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, 1921824 + ... + 1992310.

It is an arithmetic number, because the mean of its divisors is an integer number (9981100800).

Almost surely, 2^137947781629 is an apocalyptic number.

It is an amenable number.

137947781629 is a deficient number, since it is larger than the sum of its proper divisors (21749831171).

137947781629 is an equidigital number, since it uses as much as digits as its factorization.

137947781629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74112.

The product of its digits is 32006016, while the sum is 64.

The spelling of 137947781629 in words is "one hundred thirty-seven billion, nine hundred forty-seven million, seven hundred eighty-one thousand, six hundred twenty-nine".