137229947520 has 64 divisors (see below), whose sum is σ = 437420463840. Its totient is φ = 36594652160.

The previous prime is 137229947509. The next prime is 137229947549. The reversal of 137229947520 is 25749922731.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35735046 + ... + 35738885.

Almost surely, 2^137229947520 is an apocalyptic number.

137229947520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137229947520 is an abundant number, since it is smaller than the sum of its proper divisors (300190516320).

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

137229947520 is an equidigital number, since it uses as much as digits as its factorization.

137229947520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71473953 (or 71473941 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 137229947520 in words is "one hundred thirty-seven billion, two hundred twenty-nine million, nine hundred forty-seven thousand, five hundred twenty".