138909741262 has 16 divisors (see below), whose sum is σ = 215928471600. Its totient is φ = 66942003520.

The previous prime is 138909741239. The next prime is 138909741277. The reversal of 138909741262 is 262147909831.

It is a congruent number.

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, 2071564 + ... + 2137567.

It is an arithmetic number, because the mean of its divisors is an integer number (13495529475).

Almost surely, 2^138909741262 is an apocalyptic number.

138909741262 is a deficient number, since it is larger than the sum of its proper divisors (77018730338).

138909741262 is a wasteful number, since it uses less digits than its factorization.

138909741262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209731.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 138909741262 in words is "one hundred thirty-eight billion, nine hundred nine million, seven hundred forty-one thousand, two hundred sixty-two".