1274539291872 has 768 divisors, whose sum is σ = 4408709824512. Its totient is φ = 312883200000.

The previous prime is 1274539291847. The next prime is 1274539291901. The reversal of 1274539291872 is 2781929354721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1312604347 + ... + 1312605317.

It is an arithmetic number, because the mean of its divisors is an integer number (5740507584).

Almost surely, 2^{1274539291872} is an apocalyptic number.

1274539291872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1274539291872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204354912256).

1274539291872 is an abundant number, since it is smaller than the sum of its proper divisors (3134170532640).

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

1274539291872 is a wasteful number, since it uses less digits than its factorization.

1274539291872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1167 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 60.

The spelling of 1274539291872 in words is "one trillion, two hundred seventy-four billion, five hundred thirty-nine million, two hundred ninety-one thousand, eight hundred seventy-two".