21514632258 has 32 divisors (see below), whose sum is σ = 49199800320. Its totient is φ = 6144100560.

The previous prime is 21514632233. The next prime is 21514632281. The reversal of 21514632258 is 85223641512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32668 + ... + 209991.

It is an arithmetic number, because the mean of its divisors is an integer number (1537493760).

Almost surely, 2^21514632258 is an apocalyptic number.

21514632258 is an abundant number, since it is smaller than the sum of its proper divisors (27685168062).

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

21514632258 is a wasteful number, since it uses less digits than its factorization.

21514632258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244782.

The product of its digits is 115200, while the sum is 39.

The spelling of 21514632258 in words is "twenty-one billion, five hundred fourteen million, six hundred thirty-two thousand, two hundred fifty-eight".