86542651831802 has 4 divisors (see below), whose sum is σ = 129813977747706. Its totient is φ = 43271325915900.

The previous prime is 86542651831793. The next prime is 86542651831897. The reversal of 86542651831802 is 20813815624568.

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., 48347421339361 + 38195230492441 = 6953231^2 + 6180229^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21635662957949 + ... + 21635662957952.

Almost surely, 2^{86542651831802} is an apocalyptic number.

86542651831802 is a deficient number, since it is larger than the sum of its proper divisors (43271325915904).

86542651831802 is a wasteful number, since it uses less digits than its factorization.

86542651831802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43271325915903.

The product of its (nonzero) digits is 22118400, while the sum is 59.

The spelling of 86542651831802 in words is "eighty-six trillion, five hundred forty-two billion, six hundred fifty-one million, eight hundred thirty-one thousand, eight hundred two".