10204526621 has 4 divisors (see below), whose sum is σ = 10205873244. Its totient is φ = 10203180000.

The previous prime is 10204526611. The next prime is 10204526627. The reversal of 10204526621 is 12662540201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12662540201 = 79 ⋅160285319.

It can be written as a sum of positive squares in 2 ways, for example, as 8563466521 + 1641060100 = 92539^2 + 40510^2 .

It is a cyclic number.

It is not a de Polignac number, because 10204526621 - 2⁶ = 10204526557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204526627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661880 + ... + 677121.

It is an arithmetic number, because the mean of its divisors is an integer number (2551468311).

Almost surely, 2^10204526621 is an apocalyptic number.

It is an amenable number.

10204526621 is a deficient number, since it is larger than the sum of its proper divisors (1346623).

10204526621 is an equidigital number, since it uses as much as digits as its factorization.

10204526621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346622.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 10204526621 in words is "ten billion, two hundred four million, five hundred twenty-six thousand, six hundred twenty-one".