406268390650 has 24 divisors (see below), whose sum is σ = 781716423420. Its totient is φ = 156903653760.

The previous prime is 406268390609. The next prime is 406268390653. The reversal of 406268390650 is 56093862604.

It can be written as a sum of positive squares in 6 ways, for example, as 230364481369 + 175903909281 = 479963^2 + 419409^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406268390594 and 406268390603.

It is not an unprimeable number, because it can be changed into a prime (406268390653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140091099 + ... + 140093998.

Almost surely, 2^406268390650 is an apocalyptic number.

406268390650 is a deficient number, since it is larger than the sum of its proper divisors (375448032770).

406268390650 is a wasteful number, since it uses less digits than its factorization.

406268390650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280185138 (or 280185133 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 406268390650 in words is "four hundred six billion, two hundred sixty-eight million, three hundred ninety thousand, six hundred fifty".