123922690560 has 240 divisors, whose sum is σ = 445076888256. Its totient is φ = 33045884928.

The previous prime is 123922690531. The next prime is 123922690589. The reversal of 123922690560 is 65096229321.

123922690560 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 22 + 69 + 0 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (123922690531) and next prime (123922690589).

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×123922690560² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522477 + ... + 721683.

Almost surely, 2^123922690560 is an apocalyptic number.

123922690560 is a gapful number since it is divisible by the number (10) 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 123922690560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222538444128).

123922690560 is an abundant number, since it is smaller than the sum of its proper divisors (321154197696).

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

123922690560 is an frugal number, since it uses more digits than its factorization.

123922690560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199245 (or 199217 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 123922690560 in words is "one hundred twenty-three billion, nine hundred twenty-two million, six hundred ninety thousand, five hundred sixty".