23121697848 has 32 divisors (see below), whose sum is σ = 57848549760. Its totient is φ = 7701325280.

The previous prime is 23121697831. The next prime is 23121697849. The reversal of 23121697848 is 84879612132.

It is a happy number.

It is a super-2 number, since 2×23121697848² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23121697848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121697849) 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, 337188 + ... + 399923.

It is an arithmetic number, because the mean of its divisors is an integer number (1807767180).

Almost surely, 2^23121697848 is an apocalyptic number.

It is an amenable number.

23121697848 is an abundant number, since it is smaller than the sum of its proper divisors (34726851912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23121697848 is a wasteful number, since it uses less digits than its factorization.

23121697848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738427 (or 738423 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The spelling of 23121697848 in words is "twenty-three billion, one hundred twenty-one million, six hundred ninety-seven thousand, eight hundred forty-eight".