445401640262506 has 32 divisors (see below), whose sum is σ = 670203483964560. Its totient is φ = 222001270732800.

The previous prime is 445401640262483. The next prime is 445401640262543. The reversal of 445401640262506 is 605262046104544.

It can be written as a sum of positive squares in 8 ways, for example, as 304209236144025 + 141192404118481 = 17441595^2 + 11882441^2 .

It is a super-2 number, since 2×445401640262506² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445401640262506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18888145636 + ... + 18888169216.

Almost surely, 2^{445401640262506} is an apocalyptic number.

445401640262506 is a deficient number, since it is larger than the sum of its proper divisors (224801843702054).

445401640262506 is a wasteful number, since it uses less digits than its factorization.

445401640262506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39130.

The product of its (nonzero) digits is 5529600, while the sum is 49.

The spelling of 445401640262506 in words is "four hundred forty-five trillion, four hundred one billion, six hundred forty million, two hundred sixty-two thousand, five hundred six".