1270745987896 has 256 divisors, whose sum is σ = 3166561382400. Its totient is φ = 463121971200.

The previous prime is 1270745987851. The next prime is 1270745987939. The reversal of 1270745987896 is 6987895470721.

It is a super-2 number, since 2×1270745987896² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 422033031 + ... + 422036041.

It is an arithmetic number, because the mean of its divisors is an integer number (12369380400).

Almost surely, 2^{1270745987896} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1270745987896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583280691200).

1270745987896 is an abundant number, since it is smaller than the sum of its proper divisors (1895815394504).

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

1270745987896 is a wasteful number, since it uses less digits than its factorization.

1270745987896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498 (or 3494 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 73.

The spelling of 1270745987896 in words is "one trillion, two hundred seventy billion, seven hundred forty-five million, nine hundred eighty-seven thousand, eight hundred ninety-six".