23149774620 has 288 divisors, whose sum is σ = 87425049600. Its totient is φ = 5061184128.

The previous prime is 23149774513. The next prime is 23149774649. The reversal of 23149774620 is 2647794132.

23149774620 is a `hidden beast` number, since 2 + 3 + 14 + 9 + 7 + 7 + 4 + 620 = 666.

It is a super-2 number, since 2×23149774620² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 589561 + ... + 627599.

It is an arithmetic number, because the mean of its divisors is an integer number (303559200).

Almost surely, 2^23149774620 is an apocalyptic number.

23149774620 is a gapful number since it is divisible by the number (20) 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 23149774620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43712524800).

23149774620 is an abundant number, since it is smaller than the sum of its proper divisors (64275274980).

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

23149774620 is a wasteful number, since it uses less digits than its factorization.

23149774620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38094 (or 38079 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 23149774620 in words is "twenty-three billion, one hundred forty-nine million, seven hundred seventy-four thousand, six hundred twenty".