10564393089021 has 32 divisors (see below), whose sum is σ = 14455239671808. Its totient is φ = 6859761363840.

The previous prime is 10564393089001. The next prime is 10564393089037. The reversal of 10564393089021 is 12098039346501.

It is not a de Polignac number, because 10564393089021 - 2¹⁴ = 10564393072637 is a prime.

It is a super-2 number, since 2×10564393089021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10564393089001) 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, 26860836 + ... + 27251298.

It is an arithmetic number, because the mean of its divisors is an integer number (451726239744).

Almost surely, 2^{10564393089021} is an apocalyptic number.

It is an amenable number.

10564393089021 is a deficient number, since it is larger than the sum of its proper divisors (3890846582787).

10564393089021 is a wasteful number, since it uses less digits than its factorization.

10564393089021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391441.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 10564393089021 in words is "ten trillion, five hundred sixty-four billion, three hundred ninety-three million, eighty-nine thousand, twenty-one".