213740537700 has 72 divisors (see below), whose sum is σ = 618542098272. Its totient is φ = 56986465280.

The previous prime is 213740537669. The next prime is 213740537707. The reversal of 213740537700 is 7735047312.

It is not an unprimeable number, because it can be changed into a prime (213740537707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549972 + ... + 1682228.

It is an arithmetic number, because the mean of its divisors is an integer number (8590862476).

Almost surely, 2^213740537700 is an apocalyptic number.

213740537700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213740537700 is an abundant number, since it is smaller than the sum of its proper divisors (404801560572).

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

213740537700 is a wasteful number, since it uses less digits than its factorization.

213740537700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137661 (or 137654 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 39.

The spelling of 213740537700 in words is "two hundred thirteen billion, seven hundred forty million, five hundred thirty-seven thousand, seven hundred".