10455661261 has 4 divisors (see below), whose sum is σ = 10485281052. Its totient is φ = 10426041472.

The previous prime is 10455661253. The next prime is 10455661319. The reversal of 10455661261 is 16216655401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3037112100 + 7418549161 = 55110^2 + 86131^2 .

It is a cyclic number.

It is not a de Polignac number, because 10455661261 - 2³ = 10455661253 is a prime.

It is a super-2 number, since 2×10455661261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10455661261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10455661361) 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, 14809366 + ... + 14810071.

It is an arithmetic number, because the mean of its divisors is an integer number (2621320263).

Almost surely, 2^10455661261 is an apocalyptic number.

It is an amenable number.

10455661261 is a deficient number, since it is larger than the sum of its proper divisors (29619791).

10455661261 is an equidigital number, since it uses as much as digits as its factorization.

10455661261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29619790.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 10455661261 in words is "ten billion, four hundred fifty-five million, six hundred sixty-one thousand, two hundred sixty-one".