40231621279 has 2 divisors, whose sum is σ = 40231621280. Its totient is φ = 40231621278.

The previous prime is 40231621271. The next prime is 40231621361. The reversal of 40231621279 is 97212613204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40231621279 - 2³ = 40231621271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40231621271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115810639 + 20115810640.

It is an arithmetic number, because the mean of its divisors is an integer number (20115810640).

Almost surely, 2^40231621279 is an apocalyptic number.

40231621279 is a deficient number, since it is larger than the sum of its proper divisors (1).

40231621279 is an equidigital number, since it uses as much as digits as its factorization.

40231621279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 40231621279 in words is "forty billion, two hundred thirty-one million, six hundred twenty-one thousand, two hundred seventy-nine".