1645268290636 has 48 divisors (see below), whose sum is σ = 2895394955040. Its totient is φ = 818030223360.

The previous prime is 1645268290619. The next prime is 1645268290637. The reversal of 1645268290636 is 6360928625461.

It is not an unprimeable number, because it can be changed into a prime (1645268290637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393113966 + ... + 1393115146.

It is an arithmetic number, because the mean of its divisors is an integer number (60320728230).

Almost surely, 2^{1645268290636} is an apocalyptic number.

It is an amenable number.

1645268290636 is a deficient number, since it is larger than the sum of its proper divisors (1250126664404).

1645268290636 is a wasteful number, since it uses less digits than its factorization.

1645268290636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 3512 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 1645268290636 in words is "one trillion, six hundred forty-five billion, two hundred sixty-eight million, two hundred ninety thousand, six hundred thirty-six".