23197539456 has 640 divisors, whose sum is σ = 88743916800. Its totient is φ = 5846556672.

The previous prime is 23197539373. The next prime is 23197539473. The reversal of 23197539456 is 65493579132.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21699690 + ... + 21700758.

It is an arithmetic number, because the mean of its divisors is an integer number (138662370).

Almost surely, 2^23197539456 is an apocalyptic number.

23197539456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23197539456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44371958400).

23197539456 is an abundant number, since it is smaller than the sum of its proper divisors (65546377344).

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

23197539456 is a wasteful number, since it uses less digits than its factorization.

23197539456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1117 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The spelling of 23197539456 in words is "twenty-three billion, one hundred ninety-seven million, five hundred thirty-nine thousand, four hundred fifty-six".