1291527359516 has 12 divisors (see below), whose sum is σ = 2260183844688. Its totient is φ = 645760546752.

The previous prime is 1291527359513. The next prime is 1291527359533. The reversal of 1291527359516 is 6159537251921.

It is a super-2 number, since 2×1291527359516² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291527359513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315545 + ... + 1637871.

It is an arithmetic number, because the mean of its divisors is an integer number (188348653724).

Almost surely, 2^{1291527359516} is an apocalyptic number.

It is an amenable number.

1291527359516 is a deficient number, since it is larger than the sum of its proper divisors (968656485172).

1291527359516 is a wasteful number, since it uses less digits than its factorization.

1291527359516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566508 (or 1566506 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 56.

The spelling of 1291527359516 in words is "one trillion, two hundred ninety-one billion, five hundred twenty-seven million, three hundred fifty-nine thousand, five hundred sixteen".