1272662123500 has 96 divisors (see below), whose sum is σ = 2826157239360. Its totient is φ = 500524992000.

The previous prime is 1272662123479. The next prime is 1272662123549. The reversal of 1272662123500 is 53212662721.

It is a self number, because there is not a number n which added to its sum of digits gives 1272662123500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97867999 + ... + 97881001.

It is an arithmetic number, because the mean of its divisors is an integer number (29439137910).

Almost surely, 2^{1272662123500} is an apocalyptic number.

1272662123500 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 1272662123500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413078619680).

1272662123500 is an abundant number, since it is smaller than the sum of its proper divisors (1553495115860).

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

1272662123500 is a wasteful number, since it uses less digits than its factorization.

1272662123500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16292 (or 16280 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 1272662123500 in words is "one trillion, two hundred seventy-two billion, six hundred sixty-two million, one hundred twenty-three thousand, five hundred".