423859508691 has 8 divisors (see below), whose sum is σ = 565152765840. Its totient is φ = 282569628672.

The previous prime is 423859508669. The next prime is 423859508707. The reversal of 423859508691 is 196805958324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423859508691 - 2⁵ = 423859508659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423859501691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535270 + ... + 1065003.

It is an arithmetic number, because the mean of its divisors is an integer number (70644095730).

Almost surely, 2^423859508691 is an apocalyptic number.

423859508691 is a deficient number, since it is larger than the sum of its proper divisors (141293257149).

423859508691 is a wasteful number, since it uses less digits than its factorization.

423859508691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688565.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 423859508691 in words is "four hundred twenty-three billion, eight hundred fifty-nine million, five hundred eight thousand, six hundred ninety-one".