40264405770021 has 16 divisors (see below), whose sum is σ = 56069927195136. Its totient is φ = 25652989278576.

The previous prime is 40264405770019. The next prime is 40264405770077. The reversal of 40264405770021 is 12007750446204.

It is not a de Polignac number, because 40264405770021 - 2¹ = 40264405770019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40264405770011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259736455 + ... + 259891428.

It is an arithmetic number, because the mean of its divisors is an integer number (3504370449696).

Almost surely, 2^{40264405770021} is an apocalyptic number.

It is an amenable number.

40264405770021 is a deficient number, since it is larger than the sum of its proper divisors (15805521425115).

40264405770021 is a wasteful number, since it uses less digits than its factorization.

40264405770021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519629032.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 40264405770021 in words is "forty trillion, two hundred sixty-four billion, four hundred five million, seven hundred seventy thousand, twenty-one".