2640172112433 has 12 divisors (see below), whose sum is σ = 3813745769028. Its totient is φ = 1760039128320.

The previous prime is 2640172112429. The next prime is 2640172112441. The reversal of 2640172112433 is 3342112710462.

2640172112433 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 1 + 7 + 211 + 2 + 433 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 385030178064 + 2255141934369 = 620508^2 + 1501713^2 .

It is not a de Polignac number, because 2640172112433 - 2² = 2640172112429 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640172152433) 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, 6079560 + ... + 6499337.

It is an arithmetic number, because the mean of its divisors is an integer number (317812147419).

Almost surely, 2^{2640172112433} is an apocalyptic number.

It is an amenable number.

2640172112433 is a deficient number, since it is larger than the sum of its proper divisors (1173573656595).

2640172112433 is a wasteful number, since it uses less digits than its factorization.

2640172112433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12602224 (or 12602221 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 2640172112433 its reverse (3342112710462), we get a palindrome (5982284822895).

The spelling of 2640172112433 in words is "two trillion, six hundred forty billion, one hundred seventy-two million, one hundred twelve thousand, four hundred thirty-three".