86651899520398 has 4 divisors (see below), whose sum is σ = 129977849280600. Its totient is φ = 43325949760198.

The previous prime is 86651899520387. The next prime is 86651899520411. The reversal of 86651899520398 is 89302599815668.

86651899520398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×86651899520398² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21662974880098 + ... + 21662974880101.

It is an arithmetic number, because the mean of its divisors is an integer number (32494462320150).

Almost surely, 2^{86651899520398} is an apocalyptic number.

86651899520398 is a deficient number, since it is larger than the sum of its proper divisors (43325949760202).

86651899520398 is a wasteful number, since it uses less digits than its factorization.

86651899520398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43325949760201.

The product of its (nonzero) digits is 2015539200, while the sum is 79.

The spelling of 86651899520398 in words is "eighty-six trillion, six hundred fifty-one billion, eight hundred ninety-nine million, five hundred twenty thousand, three hundred ninety-eight".