123289809954 has 32 divisors (see below), whose sum is σ = 274825586880. Its totient is φ = 36643410432.

The previous prime is 123289809941. The next prime is 123289809977. The reversal of 123289809954 is 459908982321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31806579 + ... + 31810454.

It is an arithmetic number, because the mean of its divisors is an integer number (8588299590).

Almost surely, 2^123289809954 is an apocalyptic number.

123289809954 is an abundant number, since it is smaller than the sum of its proper divisors (151535776926).

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

123289809954 is a wasteful number, since it uses less digits than its factorization.

123289809954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63617074.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 123289809954 in words is "one hundred twenty-three billion, two hundred eighty-nine million, eight hundred nine thousand, nine hundred fifty-four".