23213601540 has 96 divisors (see below), whose sum is σ = 72249408000. Its totient is φ = 6187781376.

The previous prime is 23213601511. The next prime is 23213601553. The reversal of 23213601540 is 4510631232.

23213601540 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 3 + 601 + 54 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596021 + ... + 1610499.

It is an arithmetic number, because the mean of its divisors is an integer number (752598000).

Almost surely, 2^23213601540 is an apocalyptic number.

23213601540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23213601540 is an abundant number, since it is smaller than the sum of its proper divisors (49035806460).

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

23213601540 is a wasteful number, since it uses less digits than its factorization.

23213601540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17466 (or 17458 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 23213601540 in words is "twenty-three billion, two hundred thirteen million, six hundred one thousand, five hundred forty".