21831375698 has 16 divisors (see below), whose sum is σ = 36595389600. Its totient is φ = 9681319200.

The previous prime is 21831375691. The next prime is 21831375719. The reversal of 21831375698 is 89657313812.

It is not an unprimeable number, because it can be changed into a prime (21831375691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12100748 + ... + 12102551.

It is an arithmetic number, because the mean of its divisors is an integer number (2287211850).

Almost surely, 2^21831375698 is an apocalyptic number.

21831375698 is a deficient number, since it is larger than the sum of its proper divisors (14764013902).

21831375698 is a wasteful number, since it uses less digits than its factorization.

21831375698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203353.

The product of its digits is 2177280, while the sum is 53.

The spelling of 21831375698 in words is "twenty-one billion, eight hundred thirty-one million, three hundred seventy-five thousand, six hundred ninety-eight".