407420693672 has 8 divisors (see below), whose sum is σ = 763913800650. Its totient is φ = 203710346832.

The previous prime is 407420693671. The next prime is 407420693683. The reversal of 407420693672 is 276396024704.

It can be written as a sum of positive squares in only one way, i.e., 264909913636 + 142510780036 = 514694^2 + 377506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 407420693672.

It is not an unprimeable number, because it can be changed into a prime (407420693671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25463793347 + ... + 25463793362.

Almost surely, 2^407420693672 is an apocalyptic number.

It is an amenable number.

407420693672 is a deficient number, since it is larger than the sum of its proper divisors (356493106978).

407420693672 is a wasteful number, since it uses less digits than its factorization.

407420693672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50927586715 (or 50927586711 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 407420693672 in words is "four hundred seven billion, four hundred twenty million, six hundred ninety-three thousand, six hundred seventy-two".