618725655402 has 16 divisors (see below), whose sum is σ = 1241918647392. Its totient is φ = 205497329040.

The previous prime is 618725655397. The next prime is 618725655461. The reversal of 618725655402 is 204556527816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186137224 + ... + 186140547.

It is an arithmetic number, because the mean of its divisors is an integer number (77619915462).

Almost surely, 2^618725655402 is an apocalyptic number.

618725655402 is an abundant number, since it is smaller than the sum of its proper divisors (623192991990).

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

618725655402 is a wasteful number, since it uses less digits than its factorization.

618725655402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372278053.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 618725655402 in words is "six hundred eighteen billion, seven hundred twenty-five million, six hundred fifty-five thousand, four hundred two".