21284876058 has 16 divisors (see below), whose sum is σ = 42584717856. Its totient is φ = 7092464400.

The previous prime is 21284876029. The next prime is 21284876111. The reversal of 21284876058 is 85067848212.

It is a self number, because there is not a number n which added to its sum of digits gives 21284876058.

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, 605041 + ... + 639252.

It is an arithmetic number, because the mean of its divisors is an integer number (2661544866).

Almost surely, 2^21284876058 is an apocalyptic number.

21284876058 is an abundant number, since it is smaller than the sum of its proper divisors (21299841798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21284876058 is a wasteful number, since it uses less digits than its factorization.

21284876058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247149.

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 21284876058 in words is "twenty-one billion, two hundred eighty-four million, eight hundred seventy-six thousand, fifty-eight".