10661254033 has 4 divisors (see below), whose sum is σ = 10661813568. Its totient is φ = 10660694500.

The previous prime is 10661254003. The next prime is 10661254049. The reversal of 10661254033 is 33045216601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10661254033 - 2⁵ = 10661254001 is a prime.

It is a super-2 number, since 2×10661254033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10661253986 and 10661254004.

It is not an unprimeable number, because it can be changed into a prime (10661254003) 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, 250141 + ... + 289642.

It is an arithmetic number, because the mean of its divisors is an integer number (2665453392).

Almost surely, 2^10661254033 is an apocalyptic number.

It is an amenable number.

10661254033 is a deficient number, since it is larger than the sum of its proper divisors (559535).

10661254033 is an equidigital number, since it uses as much as digits as its factorization.

10661254033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559534.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 10661254033 in words is "ten billion, six hundred sixty-one million, two hundred fifty-four thousand, thirty-three".