1297536951072 has 96 divisors (see below), whose sum is σ = 3450531329280. Its totient is φ = 426866319360.

The previous prime is 1297536950971. The next prime is 1297536951083. The reversal of 1297536951072 is 2701596357921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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, 19632322 + ... + 19698302.

It is an arithmetic number, because the mean of its divisors is an integer number (35943034680).

Almost surely, 2^{1297536951072} is an apocalyptic number.

1297536951072 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 1297536951072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725265664640).

1297536951072 is an abundant number, since it is smaller than the sum of its proper divisors (2152994378208).

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

1297536951072 is a wasteful number, since it uses less digits than its factorization.

1297536951072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68666 (or 68658 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 57.

The spelling of 1297536951072 in words is "one trillion, two hundred ninety-seven billion, five hundred thirty-six million, nine hundred fifty-one thousand, seventy-two".