10660621043 has 4 divisors (see below), whose sum is σ = 10661274360. Its totient is φ = 10659967728.

The previous prime is 10660621021. The next prime is 10660621073. The reversal of 10660621043 is 34012606601.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10660621043 - 2⁶ = 10660620979 is a prime.

It is a super-2 number, since 2×10660621043² (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 = 10660620997 and 10660621015.

It is not an unprimeable number, because it can be changed into a prime (10660621073) 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, 301538 + ... + 335031.

It is an arithmetic number, because the mean of its divisors is an integer number (2665318590).

Almost surely, 2^10660621043 is an apocalyptic number.

10660621043 is a deficient number, since it is larger than the sum of its proper divisors (653317).

10660621043 is an equidigital number, since it uses as much as digits as its factorization.

10660621043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653316.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 10660621043 in words is "ten billion, six hundred sixty million, six hundred twenty-one thousand, forty-three".