46991896081 has 4 divisors (see below), whose sum is σ = 50606657332. Its totient is φ = 43377134832.

The previous prime is 46991896069. The next prime is 46991896121. The reversal of 46991896081 is 18069819964.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21901336081 + 25090560000 = 147991^2 + 158400^2 .

It is a cyclic number.

It is not a de Polignac number, because 46991896081 - 2²⁵ = 46958341649 is a prime.

It is a super-3 number, since 3×46991896081³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46991896001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1807380606 + ... + 1807380631.

It is an arithmetic number, because the mean of its divisors is an integer number (12651664333).

Almost surely, 2^46991896081 is an apocalyptic number.

It is an amenable number.

46991896081 is a deficient number, since it is larger than the sum of its proper divisors (3614761251).

46991896081 is a wasteful number, since it uses less digits than its factorization.

46991896081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614761250.

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 46991896081 in words is "forty-six billion, nine hundred ninety-one million, eight hundred ninety-six thousand, eighty-one".