862561147531 has 2 divisors, whose sum is σ = 862561147532. Its totient is φ = 862561147530.

The previous prime is 862561147523. The next prime is 862561147537. The reversal of 862561147531 is 135741165268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 862561147531 - 2³ = 862561147523 is a prime.

It is a super-2 number, since 2×862561147531² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (862561147537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431280573765 + 431280573766.

It is an arithmetic number, because the mean of its divisors is an integer number (431280573766).

Almost surely, 2^862561147531 is an apocalyptic number.

862561147531 is a deficient number, since it is larger than the sum of its proper divisors (1).

862561147531 is an equidigital number, since it uses as much as digits as its factorization.

862561147531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The spelling of 862561147531 in words is "eight hundred sixty-two billion, five hundred sixty-one million, one hundred forty-seven thousand, five hundred thirty-one".