40015312297 has 2 divisors, whose sum is σ = 40015312298. Its totient is φ = 40015312296.

The previous prime is 40015312199. The next prime is 40015312319. The reversal of 40015312297 is 79221351004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30757793641 + 9257518656 = 175379^2 + 96216^2 .

It is a cyclic number.

It is not a de Polignac number, because 40015312297 - 2³⁵ = 5655573929 is a prime.

It is not a weakly prime, because it can be changed into another prime (40015312097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20007656148 + 20007656149.

It is an arithmetic number, because the mean of its divisors is an integer number (20007656149).

Almost surely, 2^40015312297 is an apocalyptic number.

It is an amenable number.

40015312297 is a deficient number, since it is larger than the sum of its proper divisors (1).

40015312297 is an equidigital number, since it uses as much as digits as its factorization.

40015312297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 40015312297 in words is "forty billion, fifteen million, three hundred twelve thousand, two hundred ninety-seven".