1521049664531 has 2 divisors, whose sum is σ = 1521049664532. Its totient is φ = 1521049664530.

The previous prime is 1521049664483. The next prime is 1521049664591. The reversal of 1521049664531 is 1354669401251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1521049664531 - 2¹⁴ = 1521049648147 is a prime.

It is a super-2 number, since 2×1521049664531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1521049664591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760524832265 + 760524832266.

It is an arithmetic number, because the mean of its divisors is an integer number (760524832266).

Almost surely, 2^{1521049664531} is an apocalyptic number.

1521049664531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521049664531 is an equidigital number, since it uses as much as digits as its factorization.

1521049664531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 1521049664531 in words is "one trillion, five hundred twenty-one billion, forty-nine million, six hundred sixty-four thousand, five hundred thirty-one".