10723421569 has 4 divisors (see below), whose sum is σ = 12255338944. Its totient is φ = 9191504196.

The previous prime is 10723421561. The next prime is 10723421593. The reversal of 10723421569 is 96512432701.

It is a happy number.

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 not a de Polignac number, because 10723421569 - 2³ = 10723421561 is a prime.

It is a super-2 number, since 2×10723421569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10723421561) 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, 765958677 + ... + 765958690.

It is an arithmetic number, because the mean of its divisors is an integer number (3063834736).

Almost surely, 2^10723421569 is an apocalyptic number.

It is an amenable number.

10723421569 is a deficient number, since it is larger than the sum of its proper divisors (1531917375).

10723421569 is an equidigital number, since it uses as much as digits as its factorization.

10723421569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531917374.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 10723421569 in words is "ten billion, seven hundred twenty-three million, four hundred twenty-one thousand, five hundred sixty-nine".