84625206818 has 4 divisors (see below), whose sum is σ = 126937810230. Its totient is φ = 42312603408.

The previous prime is 84625206803. The next prime is 84625206821. The reversal of 84625206818 is 81860252648.

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

It can be written as a sum of positive squares in only one way, i.e., 65411643049 + 19213563769 = 255757^2 + 138613^2 .

It is a super-2 number, since 2×84625206818² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21156301703 + ... + 21156301706.

Almost surely, 2^84625206818 is an apocalyptic number.

84625206818 is a deficient number, since it is larger than the sum of its proper divisors (42312603412).

84625206818 is a wasteful number, since it uses less digits than its factorization.

84625206818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42312603411.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 84625206818 in words is "eighty-four billion, six hundred twenty-five million, two hundred six thousand, eight hundred eighteen".