10510553661 has 16 divisors (see below), whose sum is σ = 14057334528. Its totient is φ = 6985440000.

The previous prime is 10510553659. The next prime is 10510553681. The reversal of 10510553661 is 16635501501.

It is not a de Polignac number, because 10510553661 - 2¹ = 10510553659 is a prime.

It is a super-2 number, since 2×10510553661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10510553621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1386321 + ... + 1393881.

It is an arithmetic number, because the mean of its divisors is an integer number (878583408).

Almost surely, 2^10510553661 is an apocalyptic number.

It is an amenable number.

10510553661 is a deficient number, since it is larger than the sum of its proper divisors (3546780867).

10510553661 is an equidigital number, since it uses as much as digits as its factorization.

10510553661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932.

The product of its (nonzero) digits is 13500, while the sum is 33.

It can be divided in two parts, 105105 and 53661, that added together give a triangular number (158766 = T₅₆₃).

The spelling of 10510553661 in words is "ten billion, five hundred ten million, five hundred fifty-three thousand, six hundred sixty-one".