1276256499798 has 32 divisors (see below), whose sum is σ = 2917409596416. Its totient is φ = 364613228928.

The previous prime is 1276256499797. The next prime is 1276256499803. The reversal of 1276256499798 is 8979946526721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276256499797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817486 + ... + 1794657.

It is an arithmetic number, because the mean of its divisors is an integer number (91169049888).

Almost surely, 2^{1276256499798} is an apocalyptic number.

1276256499798 is an abundant number, since it is smaller than the sum of its proper divisors (1641153096618).

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

1276256499798 is a wasteful number, since it uses less digits than its factorization.

1276256499798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623788.

The product of its digits is 823011840, while the sum is 75.

The spelling of 1276256499798 in words is "one trillion, two hundred seventy-six billion, two hundred fifty-six million, four hundred ninety-nine thousand, seven hundred ninety-eight".