23551040136 has 64 divisors (see below), whose sum is σ = 63456624000. Its totient is φ = 7240762368.

The previous prime is 23551040131. The next prime is 23551040159. The reversal of 23551040136 is 63104015532.

It is not an unprimeable number, because it can be changed into a prime (23551040131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375565 + ... + 433763.

It is an arithmetic number, because the mean of its divisors is an integer number (991509750).

Almost surely, 2^23551040136 is an apocalyptic number.

23551040136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23551040136 is an abundant number, since it is smaller than the sum of its proper divisors (39905583864).

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

23551040136 is a wasteful number, since it uses less digits than its factorization.

23551040136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59518 (or 59514 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 23551040136 its reverse (63104015532), we get a palindrome (86655055668).

The spelling of 23551040136 in words is "twenty-three billion, five hundred fifty-one million, forty thousand, one hundred thirty-six".