2581697379060 has 36 divisors (see below), whose sum is σ = 7831148717028. Its totient is φ = 688452634368.

The previous prime is 2581697379047. The next prime is 2581697379067. The reversal of 2581697379060 is 609737961852.

2581697379060 is a `hidden beast` number, since 258 + 1 + 6 + 9 + 7 + 379 + 0 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1939384893924 + 642312485136 = 1392618^2 + 801444^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2581697379060² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581697379067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7171381429 + ... + 7171381788.

Almost surely, 2^{2581697379060} is an apocalyptic number.

2581697379060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2581697379060 is an abundant number, since it is smaller than the sum of its proper divisors (5249451337968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2581697379060 is a wasteful number, since it uses less digits than its factorization.

2581697379060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342763232 (or 14342763227 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 2581697379060 in words is "two trillion, five hundred eighty-one billion, six hundred ninety-seven million, three hundred seventy-nine thousand, sixty".