2465271781 has 24 divisors (see below), whose sum is σ = 2907937536. Its totient is φ = 2083656960.

The previous prime is 2465271773. The next prime is 2465271799. The reversal of 2465271781 is 1871725642.

It is not a de Polignac number, because 2465271781 - 2³ = 2465271773 is a prime.

It is a super-2 number, since 2×2465271781² = 12155129908389823922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2465271481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572460 + ... + 1574026.

It is an arithmetic number, because the mean of its divisors is an integer number (121164064).

Almost surely, 2^2465271781 is an apocalyptic number.

It is an amenable number.

2465271781 is a deficient number, since it is larger than the sum of its proper divisors (442665755).

2465271781 is a wasteful number, since it uses less digits than its factorization.

2465271781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 2002 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 2465271781 is about 49651.5033105746. The cubic root of 2465271781 is about 1350.8950225822.

The spelling of 2465271781 in words is "two billion, four hundred sixty-five million, two hundred seventy-one thousand, seven hundred eighty-one".