86951963505 has 64 divisors (see below), whose sum is σ = 155765161728. Its totient is φ = 41060597760.

The previous prime is 86951963503. The next prime is 86951963509. The reversal of 86951963505 is 50536915968.

It is a happy number.

It is not a de Polignac number, because 86951963505 - 2¹ = 86951963503 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (86951963503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1161777 + ... + 1234353.

It is an arithmetic number, because the mean of its divisors is an integer number (2433830652).

Almost surely, 2^86951963505 is an apocalyptic number.

It is an amenable number.

86951963505 is a deficient number, since it is larger than the sum of its proper divisors (68813198223).

86951963505 is a wasteful number, since it uses less digits than its factorization.

86951963505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72786.

The product of its (nonzero) digits is 8748000, while the sum is 57.

The spelling of 86951963505 in words is "eighty-six billion, nine hundred fifty-one million, nine hundred sixty-three thousand, five hundred five".