1273919985072 has 60 divisors (see below), whose sum is σ = 4074521860240. Its totient is φ = 363977138304.

The previous prime is 1273919985061. The next prime is 1273919985113. The reversal of 1273919985072 is 2705899193721.

1273919985072 is a `hidden beast` number, since 1 + 2 + 7 + 39 + 1 + 9 + 98 + 507 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 631903747 + ... + 631905762.

Almost surely, 2^{1273919985072} is an apocalyptic number.

1273919985072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1273919985072 is an abundant number, since it is smaller than the sum of its proper divisors (2800601875168).

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

1273919985072 is a wasteful number, since it uses less digits than its factorization.

1273919985072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263809530 (or 1263809521 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

The spelling of 1273919985072 in words is "one trillion, two hundred seventy-three billion, nine hundred nineteen million, nine hundred eighty-five thousand, seventy-two".