21413250153354 has 64 divisors (see below), whose sum is σ = 45232436396160. Its totient is φ = 6739308656640.

The previous prime is 21413250153329. The next prime is 21413250153389. The reversal of 21413250153354 is 45335105231412.

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, 96741232 + ... + 96962324.

It is an arithmetic number, because the mean of its divisors is an integer number (706756818690).

Almost surely, 2^{21413250153354} is an apocalyptic number.

21413250153354 is an abundant number, since it is smaller than the sum of its proper divisors (23819186242806).

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

21413250153354 is a wasteful number, since it uses less digits than its factorization.

21413250153354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223975.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 21413250153354 its reverse (45335105231412), we get a palindrome (66748355384766).

The spelling of 21413250153354 in words is "twenty-one trillion, four hundred thirteen billion, two hundred fifty million, one hundred fifty-three thousand, three hundred fifty-four".