3950031626645 has 18 divisors (see below), whose sum is σ = 5132778890274. Its totient is φ = 2916903768480.

The previous prime is 3950031626627. The next prime is 3950031626699. The reversal of 3950031626645 is 5466261300593.

It can be written as a sum of positive squares in 3 ways, for example, as 18698374564 + 3931333252081 = 136742^2 + 1982759^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3950031626645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3950031626593 and 3950031626602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57739310 + ... + 57807680.

It is an arithmetic number, because the mean of its divisors is an integer number (285154382793).

Almost surely, 2^{3950031626645} is an apocalyptic number.

It is an amenable number.

3950031626645 is a deficient number, since it is larger than the sum of its proper divisors (1182747263629).

3950031626645 is an frugal number, since it uses more digits than its factorization.

3950031626645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136773 (or 68389 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 3950031626645 in words is "three trillion, nine hundred fifty billion, thirty-one million, six hundred twenty-six thousand, six hundred forty-five".