2145436565436 has 72 divisors (see below), whose sum is σ = 5745560642640. Its totient is φ = 672683966976.

The previous prime is 2145436565423. The next prime is 2145436565497. The reversal of 2145436565436 is 6345656345412.

2145436565436 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 4 + 36 + 565 + 43 + 6 = 666.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20275 + ... + 2071541.

It is an arithmetic number, because the mean of its divisors is an integer number (79799453370).

Almost surely, 2^{2145436565436} is an apocalyptic number.

It is an amenable number.

2145436565436 is an abundant number, since it is smaller than the sum of its proper divisors (3600124077204).

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

2145436565436 is a wasteful number, since it uses less digits than its factorization.

2145436565436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053003 (or 2052998 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 2145436565436 in words is "two trillion, one hundred forty-five billion, four hundred thirty-six million, five hundred sixty-five thousand, four hundred thirty-six".