21563125462 has 16 divisors (see below), whose sum is σ = 34535888640. Its totient is φ = 10072965672.

The previous prime is 21563125453. The next prime is 21563125469. The reversal of 21563125462 is 26452136512.

It is a super-3 number, since 3×21563125462³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21563125469) 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, 5448762 + ... + 5452717.

It is an arithmetic number, because the mean of its divisors is an integer number (2158493040).

Almost surely, 2^21563125462 is an apocalyptic number.

21563125462 is a deficient number, since it is larger than the sum of its proper divisors (12972763178).

21563125462 is a wasteful number, since it uses less digits than its factorization.

21563125462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901547.

The product of its digits is 86400, while the sum is 37.

The spelling of 21563125462 in words is "twenty-one billion, five hundred sixty-three million, one hundred twenty-five thousand, four hundred sixty-two".