86161947948 has 18 divisors (see below), whose sum is σ = 217798257404. Its totient is φ = 28720649304.

The previous prime is 86161947947. The next prime is 86161947979. The reversal of 86161947948 is 84974916168.

86161947948 is a `hidden beast` number, since 8 + 6 + 1 + 619 + 4 + 7 + 9 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×86161947948² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86161947947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1196693686 + ... + 1196693757.

Almost surely, 2^86161947948 is an apocalyptic number.

It is an amenable number.

86161947948 is an abundant number, since it is smaller than the sum of its proper divisors (131636309456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86161947948 is a wasteful number, since it uses less digits than its factorization.

86161947948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393387453 (or 2393387448 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 86161947948 in words is "eighty-six billion, one hundred sixty-one million, nine hundred forty-seven thousand, nine hundred forty-eight".