40291841251 has 4 divisors (see below), whose sum is σ = 40440519904. Its totient is φ = 40143162600.

The previous prime is 40291841231. The next prime is 40291841257. The reversal of 40291841251 is 15214819204.

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 40291841251 - 2⁹ = 40291840739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40291841251.

It is not an unprimeable number, because it can be changed into a prime (40291841257) 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 3 ways as a sum of consecutive naturals, for example, 74338920 + ... + 74339461.

It is an arithmetic number, because the mean of its divisors is an integer number (10110129976).

Almost surely, 2^40291841251 is an apocalyptic number.

40291841251 is a deficient number, since it is larger than the sum of its proper divisors (148678653).

40291841251 is a wasteful number, since it uses less digits than its factorization.

40291841251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148678652.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 40291841251 in words is "forty billion, two hundred ninety-one million, eight hundred forty-one thousand, two hundred fifty-one".