265142621403631 has 16 divisors (see below), whose sum is σ = 271828331516160. Its totient is φ = 258546785736960.

The previous prime is 265142621403581. The next prime is 265142621403637. The reversal of 265142621403631 is 136304126241562.

It is a cyclic number.

It is not a de Polignac number, because 265142621403631 - 2²⁷ = 265142487185903 is a prime.

It is a super-2 number, since 2×265142621403631² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265142621403637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23488866 + ... + 32893951.

It is an arithmetic number, because the mean of its divisors is an integer number (16989270719760).

Almost surely, 2^{265142621403631} is an apocalyptic number.

265142621403631 is a deficient number, since it is larger than the sum of its proper divisors (6685710112529).

265142621403631 is a wasteful number, since it uses less digits than its factorization.

265142621403631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56383614.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 265142621403631 in words is "two hundred sixty-five trillion, one hundred forty-two billion, six hundred twenty-one million, four hundred three thousand, six hundred thirty-one".