213740537738 has 16 divisors (see below), whose sum is σ = 394597916160. Its totient is φ = 84556696176.

The previous prime is 213740537729. The next prime is 213740537789. The reversal of 213740537738 is 837735047312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587199098 + ... + 587199461.

It is an arithmetic number, because the mean of its divisors is an integer number (24662369760).

Almost surely, 2^213740537738 is an apocalyptic number.

213740537738 is a deficient number, since it is larger than the sum of its proper divisors (180857378422).

213740537738 is a wasteful number, since it uses less digits than its factorization.

213740537738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174398581.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 213740537738 in words is "two hundred thirteen billion, seven hundred forty million, five hundred thirty-seven thousand, seven hundred thirty-eight".