23147099640 has 192 divisors, whose sum is σ = 86033525760. Its totient is φ = 5287161600.

The previous prime is 23147099639. The next prime is 23147099641. The reversal of 23147099640 is 4699074132.

It is a happy number.

23147099640 is a `hidden beast` number, since 2 + 31 + 470 + 99 + 64 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23147099639) and next prime (23147099641).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23147099641) 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, 5922567 + ... + 5926473.

It is an arithmetic number, because the mean of its divisors is an integer number (448091280).

Almost surely, 2^23147099640 is an apocalyptic number.

23147099640 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 23147099640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43016762880).

23147099640 is an abundant number, since it is smaller than the sum of its proper divisors (62886426120).

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

23147099640 is a wasteful number, since it uses less digits than its factorization.

23147099640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282 (or 6275 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 23147099640 in words is "twenty-three billion, one hundred forty-seven million, ninety-nine thousand, six hundred forty".