40445215427 has 2 divisors, whose sum is σ = 40445215428. Its totient is φ = 40445215426.

The previous prime is 40445215399. The next prime is 40445215441. The reversal of 40445215427 is 72451254404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40445215427 - 2²² = 40441021123 is a prime.

It is not a weakly prime, because it can be changed into another prime (40445245427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222607713 + 20222607714.

It is an arithmetic number, because the mean of its divisors is an integer number (20222607714).

Almost surely, 2^40445215427 is an apocalyptic number.

40445215427 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445215427 is an equidigital number, since it uses as much as digits as its factorization.

40445215427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 38.

The spelling of 40445215427 in words is "forty billion, four hundred forty-five million, two hundred fifteen thousand, four hundred twenty-seven".