21355410256060 has 96 divisors (see below), whose sum is σ = 46101445705728. Its totient is φ = 8305604939520.

The previous prime is 21355410256007. The next prime is 21355410256109. The reversal of 21355410256060 is 6065201455312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135833217 + ... + 135990343.

It is an arithmetic number, because the mean of its divisors is an integer number (480223392768).

Almost surely, 2^{21355410256060} is an apocalyptic number.

21355410256060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21355410256060 is an abundant number, since it is smaller than the sum of its proper divisors (24746035449668).

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

21355410256060 is a wasteful number, since it uses less digits than its factorization.

21355410256060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158131 (or 158129 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 21355410256060 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred ten million, two hundred fifty-six thousand, sixty".