23977147656 has 192 divisors, whose sum is σ = 78523637760. Its totient is φ = 6026832000.

The previous prime is 23977147637. The next prime is 23977147657. The reversal of 23977147656 is 65674177932.

It is a junction number, because it is equal to n+sod(n) for n = 23977147596 and 23977147605.

It is not an unprimeable number, because it can be changed into a prime (23977147657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371121 + ... + 430911.

It is an arithmetic number, because the mean of its divisors is an integer number (408977280).

Almost surely, 2^23977147656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23977147656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39261818880).

23977147656 is an abundant number, since it is smaller than the sum of its proper divisors (54546490104).

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

23977147656 is a wasteful number, since it uses less digits than its factorization.

23977147656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59856 (or 59845 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 57.

The spelling of 23977147656 in words is "twenty-three billion, nine hundred seventy-seven million, one hundred forty-seven thousand, six hundred fifty-six".