64220567553 has 28 divisors (see below), whose sum is σ = 98526080400. Its totient is φ = 41818023576.

The previous prime is 64220567507. The next prime is 64220567569. The reversal of 64220567553 is 35576502246.

64220567553 is a `hidden beast` number, since 6 + 42 + 2 + 0 + 56 + 7 + 553 = 666.

It is not a de Polignac number, because 64220567553 - 2²¹ = 64218470401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64220567499 and 64220567508.

It is not an unprimeable number, because it can be changed into a prime (64220567153) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 993003 + ... + 1055696.

Almost surely, 2^64220567553 is an apocalyptic number.

It is an amenable number.

64220567553 is a deficient number, since it is larger than the sum of its proper divisors (34305512847).

64220567553 is an equidigital number, since it uses as much as digits as its factorization.

64220567553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048760 (or 2048745 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 64220567553 in words is "sixty-four billion, two hundred twenty million, five hundred sixty-seven thousand, five hundred fifty-three".