86941550421 has 32 divisors (see below), whose sum is σ = 144309225600. Its totient is φ = 51267738240.

The previous prime is 86941550419. The next prime is 86941550497. The reversal of 86941550421 is 12405514968.

86941550421 is a `hidden beast` number, since 8 + 6 + 94 + 1 + 550 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 86941550421 - 2¹ = 86941550419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86941550321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3944856 + ... + 3966833.

It is an arithmetic number, because the mean of its divisors is an integer number (4509663300).

Almost surely, 2^86941550421 is an apocalyptic number.

It is an amenable number.

86941550421 is a deficient number, since it is larger than the sum of its proper divisors (57367675179).

86941550421 is a wasteful number, since it uses less digits than its factorization.

86941550421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911746 (or 7911740 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 86941550421 in words is "eighty-six billion, nine hundred forty-one million, five hundred fifty thousand, four hundred twenty-one".