243656652534 has 16 divisors (see below), whose sum is σ = 487802096688. Its totient is φ = 81137418912.

The previous prime is 243656652487. The next prime is 243656652581. The reversal of 243656652534 is 435256656342.

It is an interprime number because it is at equal distance from previous prime (243656652487) and next prime (243656652581).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20359837 + ... + 20371800.

It is an arithmetic number, because the mean of its divisors is an integer number (30487631043).

Almost surely, 2^243656652534 is an apocalyptic number.

243656652534 is an abundant number, since it is smaller than the sum of its proper divisors (244145444154).

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

243656652534 is a wasteful number, since it uses less digits than its factorization.

243656652534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40732639.

The product of its digits is 15552000, while the sum is 51.

The spelling of 243656652534 in words is "two hundred forty-three billion, six hundred fifty-six million, six hundred fifty-two thousand, five hundred thirty-four".