421532150666 has 16 divisors (see below), whose sum is σ = 690177971808. Its totient is φ = 191494942800.

The previous prime is 421532150623. The next prime is 421532150681. The reversal of 421532150666 is 666051235124.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5490020 + ... + 5566271.

It is an arithmetic number, because the mean of its divisors is an integer number (43136123238).

Almost surely, 2^421532150666 is an apocalyptic number.

421532150666 is a deficient number, since it is larger than the sum of its proper divisors (268645821142).

421532150666 is a wasteful number, since it uses less digits than its factorization.

421532150666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058037.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 421532150666 in words is "four hundred twenty-one billion, five hundred thirty-two million, one hundred fifty thousand, six hundred sixty-six".