21920262853401 has 32 divisors (see below), whose sum is σ = 35427037132800. Its totient is φ = 13284876655440.

The previous prime is 21920262853381. The next prime is 21920262853439. The reversal of 21920262853401 is 10435826202912.

21920262853401 is a `hidden beast` number, since 2 + 1 + 9 + 2 + 0 + 26 + 285 + 340 + 1 = 666.

It is not a de Polignac number, because 21920262853401 - 2⁶ = 21920262853337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21920262853901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35813820 + ... + 36420738.

It is an arithmetic number, because the mean of its divisors is an integer number (1107094910400).

Almost surely, 2^{21920262853401} is an apocalyptic number.

It is an amenable number.

21920262853401 is a deficient number, since it is larger than the sum of its proper divisors (13506774279399).

21920262853401 is a wasteful number, since it uses less digits than its factorization.

21920262853401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728546 (or 728540 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 21920262853401 in words is "twenty-one trillion, nine hundred twenty billion, two hundred sixty-two million, eight hundred fifty-three thousand, four hundred one".