40261156447 has 2 divisors, whose sum is σ = 40261156448. Its totient is φ = 40261156446.

The previous prime is 40261156393. The next prime is 40261156469. The reversal of 40261156447 is 74465116204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40261156447 - 2²³ = 40252767839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40261166447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20130578223 + 20130578224.

It is an arithmetic number, because the mean of its divisors is an integer number (20130578224).

Almost surely, 2^40261156447 is an apocalyptic number.

40261156447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40261156447 is an equidigital number, since it uses as much as digits as its factorization.

40261156447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 40261156447 in words is "forty billion, two hundred sixty-one million, one hundred fifty-six thousand, four hundred forty-seven".