123640954969 has 8 divisors (see below), whose sum is σ = 141764224448. Its totient is φ = 105632754480.

The previous prime is 123640954937. The next prime is 123640954979. The reversal of 123640954969 is 969459046321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123640954969 - 2⁵ = 123640954937 is a prime.

It is a super-2 number, since 2×123640954969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123640954979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28764942 + ... + 28769239.

It is an arithmetic number, because the mean of its divisors is an integer number (17720528056).

Almost surely, 2^123640954969 is an apocalyptic number.

It is an amenable number.

123640954969 is a deficient number, since it is larger than the sum of its proper divisors (18123269479).

123640954969 is an equidigital number, since it uses as much as digits as its factorization.

123640954969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57534495.

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 123640954969 in words is "one hundred twenty-three billion, six hundred forty million, nine hundred fifty-four thousand, nine hundred sixty-nine".