404264066991 has 16 divisors (see below), whose sum is σ = 542637558624. Its totient is φ = 267701151744.

The previous prime is 404264066981. The next prime is 404264066993. The reversal of 404264066991 is 199660462404.

It is not a de Polignac number, because 404264066991 - 2¹⁰ = 404264065967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404264066993) 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, 1245535 + ... + 1536191.

It is an arithmetic number, because the mean of its divisors is an integer number (33914847414).

Almost surely, 2^404264066991 is an apocalyptic number.

404264066991 is a deficient number, since it is larger than the sum of its proper divisors (138373491633).

404264066991 is a wasteful number, since it uses less digits than its factorization.

404264066991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293770.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 404264066991 in words is "four hundred four billion, two hundred sixty-four million, sixty-six thousand, nine hundred ninety-one".