2145202620636 has 48 divisors (see below), whose sum is σ = 5087797172640. Its totient is φ = 703308145920.

The previous prime is 2145202620581. The next prime is 2145202620679. The reversal of 2145202620636 is 6360262025412.

It is a junction number, because it is equal to n+sod(n) for n = 2145202620594 and 2145202620603.

It is a congruent number.

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, 16205710 + ... + 16337546.

It is an arithmetic number, because the mean of its divisors is an integer number (105995774430).

Almost surely, 2^{2145202620636} is an apocalyptic number.

It is an amenable number.

2145202620636 is an abundant number, since it is smaller than the sum of its proper divisors (2942594552004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145202620636 is a wasteful number, since it uses less digits than its factorization.

2145202620636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154134 (or 154132 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 2145202620636 in words is "two trillion, one hundred forty-five billion, two hundred two million, six hundred twenty thousand, six hundred thirty-six".