23155355040 has 192 divisors, whose sum is σ = 74092838400. Its totient is φ = 6077620224.

The previous prime is 23155355039. The next prime is 23155355057. The reversal of 23155355040 is 4055355132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23155354992 and 23155355010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15508534 + ... + 15510026.

It is an arithmetic number, because the mean of its divisors is an integer number (385900200).

Almost surely, 2^23155355040 is an apocalyptic number.

23155355040 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 23155355040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37046419200).

23155355040 is an abundant number, since it is smaller than the sum of its proper divisors (50937483360).

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

23155355040 is a wasteful number, since it uses less digits than its factorization.

23155355040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1991 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 23155355040 in words is "twenty-three billion, one hundred fifty-five million, three hundred fifty-five thousand, forty".