123101010400550 has 192 divisors, whose sum is σ = 289444447703040. Its totient is φ = 37903675921920.

The previous prime is 123101010400507. The next prime is 123101010400567. The reversal of 123101010400550 is 55004010101321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4336513457 + ... + 4336541843.

It is an arithmetic number, because the mean of its divisors is an integer number (1507523165120).

Almost surely, 2^{123101010400550} is an apocalyptic number.

123101010400550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123101010400550 is an abundant number, since it is smaller than the sum of its proper divisors (166343437302490).

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

123101010400550 is a wasteful number, since it uses less digits than its factorization.

123101010400550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54215 (or 54210 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 123101010400550 its reverse (55004010101321), we get a palindrome (178105020501871).

The spelling of 123101010400550 in words is "one hundred twenty-three trillion, one hundred one billion, ten million, four hundred thousand, five hundred fifty".