123273472690 has 32 divisors (see below), whose sum is σ = 235275736320. Its totient is φ = 46373169024.

The previous prime is 123273472657. The next prime is 123273472717. The reversal of 123273472690 is 96274372321.

It is a happy number.

It is a super-2 number, since 2×123273472690² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123273472690.

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, 2341882 + ... + 2393941.

It is an arithmetic number, because the mean of its divisors is an integer number (7352366760).

Almost surely, 2^123273472690 is an apocalyptic number.

123273472690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123273472690 is a deficient number, since it is larger than the sum of its proper divisors (112002263630).

123273472690 is a wasteful number, since it uses less digits than its factorization.

123273472690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735986.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 123273472690 in words is "one hundred twenty-three billion, two hundred seventy-three million, four hundred seventy-two thousand, six hundred ninety".