40723691441 has 4 divisors (see below), whose sum is σ = 40807313472. Its totient is φ = 40640069412.

The previous prime is 40723691399. The next prime is 40723691483. The reversal of 40723691441 is 14419632704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40723691399) and next prime (40723691483).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40723691441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40723691941) 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, 41810285 + ... + 41811258.

It is an arithmetic number, because the mean of its divisors is an integer number (10201828368).

Almost surely, 2^40723691441 is an apocalyptic number.

It is an amenable number.

40723691441 is a deficient number, since it is larger than the sum of its proper divisors (83622031).

40723691441 is an equidigital number, since it uses as much as digits as its factorization.

40723691441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83622030.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 40723691441 in words is "forty billion, seven hundred twenty-three million, six hundred ninety-one thousand, four hundred forty-one".