123563056251 has 16 divisors (see below), whose sum is σ = 167581065600. Its totient is φ = 80960841408.

The previous prime is 123563056237. The next prime is 123563056261. The reversal of 123563056251 is 152650365321.

It is not a de Polignac number, because 123563056251 - 2¹⁵ = 123563023483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123563056261) 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, 728055 + ... + 881583.

It is an arithmetic number, because the mean of its divisors is an integer number (10473816600).

Almost surely, 2^123563056251 is an apocalyptic number.

123563056251 is a deficient number, since it is larger than the sum of its proper divisors (44018009349).

123563056251 is a wasteful number, since it uses less digits than its factorization.

123563056251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158138.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 123563056251 in words is "one hundred twenty-three billion, five hundred sixty-three million, fifty-six thousand, two hundred fifty-one".