23145351552550 has 24 divisors (see below), whose sum is σ = 43050606600456. Its totient is φ = 9258086274240.

The previous prime is 23145351552517. The next prime is 23145351552601. The reversal of 23145351552550 is 5525515354132.

It is a super-2 number, since 2×23145351552550² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23145351552550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7863994 + ... + 10398706.

It is an arithmetic number, because the mean of its divisors is an integer number (1793775275019).

Almost surely, 2^{23145351552550} is an apocalyptic number.

23145351552550 is a deficient number, since it is larger than the sum of its proper divisors (19905255047906).

23145351552550 is a wasteful number, since it uses less digits than its factorization.

23145351552550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717352 (or 2717347 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 46.

The spelling of 23145351552550 in words is "twenty-three trillion, one hundred forty-five billion, three hundred fifty-one million, five hundred fifty-two thousand, five hundred fifty".