137568813820 has 48 divisors (see below), whose sum is σ = 295681988448. Its totient is φ = 53735270400.

The previous prime is 137568813793. The next prime is 137568813821. The reversal of 137568813820 is 28318865731.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137568813821) 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, 4229620 + ... + 4262020.

It is an arithmetic number, because the mean of its divisors is an integer number (6160041426).

Almost surely, 2^137568813820 is an apocalyptic number.

137568813820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137568813820 is an abundant number, since it is smaller than the sum of its proper divisors (158113174628).

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

137568813820 is a wasteful number, since it uses less digits than its factorization.

137568813820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37390 (or 37388 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 137568813820 in words is "one hundred thirty-seven billion, five hundred sixty-eight million, eight hundred thirteen thousand, eight hundred twenty".