82500749986 has 4 divisors (see below), whose sum is σ = 123751124982. Its totient is φ = 41250374992.

The previous prime is 82500749957. The next prime is 82500749993. The reversal of 82500749986 is 68994700528.

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., 45377094361 + 37123655625 = 213019^2 + 192675^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82500749986.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20625187495 + ... + 20625187498.

Almost surely, 2^82500749986 is an apocalyptic number.

82500749986 is a deficient number, since it is larger than the sum of its proper divisors (41250374996).

82500749986 is a wasteful number, since it uses less digits than its factorization.

82500749986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41250374995.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 82500749986 in words is "eighty-two billion, five hundred million, seven hundred forty-nine thousand, nine hundred eighty-six".