1268420979140 has 48 divisors (see below), whose sum is σ = 3045325954944. Its totient is φ = 434727820800.

The previous prime is 1268420979131. The next prime is 1268420979187. The reversal of 1268420979140 is 419790248621.

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, 1276421 + ... + 2041100.

It is an arithmetic number, because the mean of its divisors is an integer number (63444290728).

Almost surely, 2^{1268420979140} is an apocalyptic number.

1268420979140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268420979140 is an abundant number, since it is smaller than the sum of its proper divisors (1776904975804).

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

1268420979140 is a wasteful number, since it uses less digits than its factorization.

1268420979140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320268 (or 3320266 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 1268420979140 in words is "one trillion, two hundred sixty-eight billion, four hundred twenty million, nine hundred seventy-nine thousand, one hundred forty".