406352772632721 has 8 divisors (see below), whose sum is σ = 573674502540384. Its totient is φ = 254966445573440.

The previous prime is 406352772632701. The next prime is 406352772632783. The reversal of 406352772632721 is 127236277253604.

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

It is a cyclic number.

It is not a de Polignac number, because 406352772632721 - 2¹³ = 406352772624529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406352772632701) 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, 3983850712035 + ... + 3983850712136.

It is an arithmetic number, because the mean of its divisors is an integer number (71709312817548).

Almost surely, 2^{406352772632721} is an apocalyptic number.

It is an amenable number.

406352772632721 is a deficient number, since it is larger than the sum of its proper divisors (167321729907663).

406352772632721 is a wasteful number, since it uses less digits than its factorization.

406352772632721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7967701424191.

The product of its (nonzero) digits is 35562240, while the sum is 57.

The spelling of 406352772632721 in words is "four hundred six trillion, three hundred fifty-two billion, seven hundred seventy-two million, six hundred thirty-two thousand, seven hundred twenty-one".