1297475908624 has 135 divisors (see below), whose sum is σ = 3107719733367. Its totient is φ = 523132925952.

The previous prime is 1297475908609. The next prime is 1297475908633. The reversal of 1297475908624 is 4268095747921.

The square root of 1297475908624 is 1139068.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 148634923024 + 1148840985600 = 385532^2 + 1071840^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 542195172 + ... + 542197564.

Almost surely, 2^{1297475908624} is an apocalyptic number.

1297475908624 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1297475908624 is the 1139068-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297475908624

1297475908624 is an abundant number, since it is smaller than the sum of its proper divisors (1810243824743).

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

1297475908624 is an frugal number, since it uses more digits than its factorization.

1297475908624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 64.

Multiplying 1297475908624 by its sum of digits (64), we get a square (83038458151936 = 9112544²).

The spelling of 1297475908624 in words is "one trillion, two hundred ninety-seven billion, four hundred seventy-five million, nine hundred eight thousand, six hundred twenty-four".