21532455522554 has 16 divisors (see below), whose sum is σ = 33999050116800. Its totient is φ = 10199453354784.

The previous prime is 21532455522509. The next prime is 21532455522619. The reversal of 21532455522554 is 45522555423512.

It is a happy number.

It is a super-3 number, since 3×21532455522554³ (a number of 41 digits) contains 333 as substring.

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, 600302 + ... + 6589785.

It is an arithmetic number, because the mean of its divisors is an integer number (2124940632300).

Almost surely, 2^{21532455522554} is an apocalyptic number.

21532455522554 is a deficient number, since it is larger than the sum of its proper divisors (12466594594246).

21532455522554 is a wasteful number, since it uses less digits than its factorization.

21532455522554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268917.

The product of its digits is 12000000, while the sum is 50.

The spelling of 21532455522554 in words is "twenty-one trillion, five hundred thirty-two billion, four hundred fifty-five million, five hundred twenty-two thousand, five hundred fifty-four".