40002236251 has 4 divisors (see below), whose sum is σ = 40027130352. Its totient is φ = 39977342152.

The previous prime is 40002236233. The next prime is 40002236269. The reversal of 40002236251 is 15263220004.

40002236251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (40002236233) and next prime (40002236269).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40002236251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40002236221) 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, 12444640 + ... + 12447853.

It is an arithmetic number, because the mean of its divisors is an integer number (10006782588).

Almost surely, 2^40002236251 is an apocalyptic number.

40002236251 is a deficient number, since it is larger than the sum of its proper divisors (24894101).

40002236251 is a wasteful number, since it uses less digits than its factorization.

40002236251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894100.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 40002236251 its reverse (15263220004), we get a palindrome (55265456255).

The spelling of 40002236251 in words is "forty billion, two million, two hundred thirty-six thousand, two hundred fifty-one".