40404726166433 has 4 divisors (see below), whose sum is σ = 40404744845460. Its totient is φ = 40404707487408.

The previous prime is 40404726166429. The next prime is 40404726166439. The reversal of 40404726166433 is 33466162740404.

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 11345424680209 + 29059301486224 = 3368297^2 + 5390668^2 .

It is a cyclic number.

It is not a de Polignac number, because 40404726166433 - 2² = 40404726166429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40404726166439) 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, 5594210 + ... + 10587947.

It is an arithmetic number, because the mean of its divisors is an integer number (10101186211365).

Almost surely, 2^{40404726166433} is an apocalyptic number.

It is an amenable number.

40404726166433 is a deficient number, since it is larger than the sum of its proper divisors (18679027).

40404726166433 is a wasteful number, since it uses less digits than its factorization.

40404726166433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18679026.

The product of its (nonzero) digits is 6967296, while the sum is 50.

The spelling of 40404726166433 in words is "forty trillion, four hundred four billion, seven hundred twenty-six million, one hundred sixty-six thousand, four hundred thirty-three".