40799447261 has 4 divisors (see below), whose sum is σ = 40805542524. Its totient is φ = 40793352000.

The previous prime is 40799447257. The next prime is 40799447303. The reversal of 40799447261 is 16274499704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26728980100 + 14070467161 = 163490^2 + 118619^2 .

It is a cyclic number.

It is not a de Polignac number, because 40799447261 - 2² = 40799447257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40799444261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037580 + ... + 3050981.

It is an arithmetic number, because the mean of its divisors is an integer number (10201385631).

Almost surely, 2^40799447261 is an apocalyptic number.

It is an amenable number.

40799447261 is a deficient number, since it is larger than the sum of its proper divisors (6095263).

40799447261 is an equidigital number, since it uses as much as digits as its factorization.

40799447261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095262.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 40799447261 in words is "forty billion, seven hundred ninety-nine million, four hundred forty-seven thousand, two hundred sixty-one".