123220386504 has 48 divisors (see below), whose sum is σ = 333753957420. Its totient is φ = 41069514240.

The previous prime is 123220386463. The next prime is 123220386517. The reversal of 123220386504 is 405683022321.

123220386504 is a `hidden beast` number, since 1 + 2 + 3 + 220 + 386 + 50 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99857264004 + 23363122500 = 316002^2 + 152850^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 726924 + ... + 880260.

Almost surely, 2^123220386504 is an apocalyptic number.

It is an amenable number.

123220386504 is an abundant number, since it is smaller than the sum of its proper divisors (210533570916).

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

123220386504 is a wasteful number, since it uses less digits than its factorization.

123220386504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164510 (or 164503 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 123220386504 in words is "one hundred twenty-three billion, two hundred twenty million, three hundred eighty-six thousand, five hundred four".