1270123912680 has 128 divisors (see below), whose sum is σ = 4368448730880. Its totient is φ = 289398159360.

The previous prime is 1270123912657. The next prime is 1270123912691. The reversal of 1270123912680 is 862193210721.

It is a super-2 number, since 2×1270123912680² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 2118661 + ... + 2651220.

It is an arithmetic number, because the mean of its divisors is an integer number (34128505710).

Almost surely, 2^{1270123912680} is an apocalyptic number.

1270123912680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270123912680 is an abundant number, since it is smaller than the sum of its proper divisors (3098324818200).

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

1270123912680 is a wasteful number, since it uses less digits than its factorization.

1270123912680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770219 (or 4770215 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 1270123912680 in words is "one trillion, two hundred seventy billion, one hundred twenty-three million, nine hundred twelve thousand, six hundred eighty".