40210251013 has 2 divisors, whose sum is σ = 40210251014. Its totient is φ = 40210251012.

The previous prime is 40210250987. The next prime is 40210251041. The reversal of 40210251013 is 31015201204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21614292324 + 18595958689 = 147018^2 + 136367^2 .

It is a cyclic number.

It is not a de Polignac number, because 40210251013 - 2²⁹ = 39673380101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40210251043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105125506 + 20105125507.

It is an arithmetic number, because the mean of its divisors is an integer number (20105125507).

Almost surely, 2^40210251013 is an apocalyptic number.

It is an amenable number.

40210251013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40210251013 is an equidigital number, since it uses as much as digits as its factorization.

40210251013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 40210251013 its reverse (31015201204), we get a palindrome (71225452217).

The spelling of 40210251013 in words is "forty billion, two hundred ten million, two hundred fifty-one thousand, thirteen".