21151210325054 has 16 divisors (see below), whose sum is σ = 32113216149840. Its totient is φ = 10446837877440.

The previous prime is 21151210325041. The next prime is 21151210325071. The reversal of 21151210325054 is 45052301215112.

It is a self number, because there is not a number n which added to its sum of digits gives 21151210325054.

It is a congruent number.

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, 6944999 + ... + 9515010.

It is an arithmetic number, because the mean of its divisors is an integer number (2007076009365).

Almost surely, 2^{21151210325054} is an apocalyptic number.

21151210325054 is a deficient number, since it is larger than the sum of its proper divisors (10962005824786).

21151210325054 is a wasteful number, since it uses less digits than its factorization.

21151210325054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16467835.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 21151210325054 in words is "twenty-one trillion, one hundred fifty-one billion, two hundred ten million, three hundred twenty-five thousand, fifty-four".