40434560251 has 4 divisors (see below), whose sum is σ = 40481963872. Its totient is φ = 40387156632.

The previous prime is 40434560227. The next prime is 40434560293. The reversal of 40434560251 is 15206543404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40434560251 - 2¹⁹ = 40434035963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40434560051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23700531 + ... + 23702236.

It is an arithmetic number, because the mean of its divisors is an integer number (10120490968).

Almost surely, 2^40434560251 is an apocalyptic number.

40434560251 is a deficient number, since it is larger than the sum of its proper divisors (47403621).

40434560251 is an equidigital number, since it uses as much as digits as its factorization.

40434560251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47403620.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 40434560251 in words is "forty billion, four hundred thirty-four million, five hundred sixty thousand, two hundred fifty-one".