21600761434 has 24 divisors (see below), whose sum is σ = 37698194880. Its totient is φ = 9255732696.

The previous prime is 21600761417. The next prime is 21600761437. The reversal of 21600761434 is 43416700612.

It is a self number, because there is not a number n which added to its sum of digits gives 21600761434.

It is not an unprimeable number, because it can be changed into a prime (21600761437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 598597 + ... + 633655.

It is an arithmetic number, because the mean of its divisors is an integer number (1570758120).

Almost surely, 2^21600761434 is an apocalyptic number.

21600761434 is a deficient number, since it is larger than the sum of its proper divisors (16097433446).

21600761434 is a wasteful number, since it uses less digits than its factorization.

21600761434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41362 (or 41355 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 21600761434 in words is "twenty-one billion, six hundred million, seven hundred sixty-one thousand, four hundred thirty-four".