3156531543457 has 4 divisors (see below), whose sum is σ = 3177435726016. Its totient is φ = 3135627360900.

The previous prime is 3156531543371. The next prime is 3156531543481. The reversal of 3156531543457 is 7543451356513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3156531543457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3156531843457) 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, 10452091053 + ... + 10452091354.

It is an arithmetic number, because the mean of its divisors is an integer number (794358931504).

Almost surely, 2^{3156531543457} is an apocalyptic number.

It is an amenable number.

3156531543457 is a deficient number, since it is larger than the sum of its proper divisors (20904182559).

3156531543457 is a wasteful number, since it uses less digits than its factorization.

3156531543457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20904182558.

The product of its digits is 11340000, while the sum is 52.

The spelling of 3156531543457 in words is "three trillion, one hundred fifty-six billion, five hundred thirty-one million, five hundred forty-three thousand, four hundred fifty-seven".