1296857130690 has 512 divisors, whose sum is σ = 3797598339072. Its totient is φ = 279756288000.

The previous prime is 1296857130641. The next prime is 1296857130703. The reversal of 1296857130690 is 960317586921.

It is a super-2 number, since 2×1296857130690² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1296857130690.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1568146057 + ... + 1568146883.

It is an arithmetic number, because the mean of its divisors is an integer number (7417184256).

Almost surely, 2^{1296857130690} is an apocalyptic number.

1296857130690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296857130690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898799169536).

1296857130690 is an abundant number, since it is smaller than the sum of its proper divisors (2500741208382).

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

1296857130690 is a wasteful number, since it uses less digits than its factorization.

1296857130690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 1296857130690 in words is "one trillion, two hundred ninety-six billion, eight hundred fifty-seven million, one hundred thirty thousand, six hundred ninety".