618901663542 has 32 divisors (see below), whose sum is σ = 1241025561600. Its totient is φ = 205763822208.

The previous prime is 618901663529. The next prime is 618901663637. The reversal of 618901663542 is 245366109816.

618901663542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8437059 + ... + 8510097.

It is an arithmetic number, because the mean of its divisors is an integer number (38782048800).

Almost surely, 2^618901663542 is an apocalyptic number.

618901663542 is an abundant number, since it is smaller than the sum of its proper divisors (622123898058).

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

618901663542 is a wasteful number, since it uses less digits than its factorization.

618901663542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76700.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 618901663542 in words is "six hundred eighteen billion, nine hundred one million, six hundred sixty-three thousand, five hundred forty-two".