45691866641 has 4 divisors (see below), whose sum is σ = 45908415984. Its totient is φ = 45475317300.

The previous prime is 45691866557. The next prime is 45691866643. The reversal of 45691866641 is 14666819654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14666819654 = 2 ⋅7333409827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45691866641 is a prime.

It is a super-4 number, since 4×45691866641⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45691866643) 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, 108274355 + ... + 108274776.

It is an arithmetic number, because the mean of its divisors is an integer number (11477103996).

Almost surely, 2^45691866641 is an apocalyptic number.

It is an amenable number.

45691866641 is a deficient number, since it is larger than the sum of its proper divisors (216549343).

45691866641 is a wasteful number, since it uses less digits than its factorization.

45691866641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216549342.

The product of its digits is 7464960, while the sum is 56.

The spelling of 45691866641 in words is "forty-five billion, six hundred ninety-one million, eight hundred sixty-six thousand, six hundred forty-one".