851579660084 has 48 divisors (see below), whose sum is σ = 1539368312832. Its totient is φ = 411983343072.

The previous prime is 851579660081. The next prime is 851579660089. The reversal of 851579660084 is 480066975158.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851579660081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9753029 + ... + 9839955.

It is an arithmetic number, because the mean of its divisors is an integer number (32070173184).

Almost surely, 2^851579660084 is an apocalyptic number.

It is an amenable number.

851579660084 is a deficient number, since it is larger than the sum of its proper divisors (687788652748).

851579660084 is a wasteful number, since it uses less digits than its factorization.

851579660084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87572 (or 87570 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 851579660084 in words is "eight hundred fifty-one billion, five hundred seventy-nine million, six hundred sixty thousand, eighty-four".