20532743615 has 4 divisors (see below), whose sum is σ = 24639292344. Its totient is φ = 16426194888.

The previous prime is 20532743603. The next prime is 20532743641. The reversal of 20532743615 is 51634723502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20532743615 - 2¹⁰ = 20532742591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053274357 + ... + 2053274366.

It is an arithmetic number, because the mean of its divisors is an integer number (6159823086).

Almost surely, 2^20532743615 is an apocalyptic number.

20532743615 is a deficient number, since it is larger than the sum of its proper divisors (4106548729).

20532743615 is an equidigital number, since it uses as much as digits as its factorization.

20532743615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106548728.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 20532743615 in words is "twenty billion, five hundred thirty-two million, seven hundred forty-three thousand, six hundred fifteen".