45971622661 has 4 divisors (see below), whose sum is σ = 46162376524. Its totient is φ = 45780868800.

The previous prime is 45971622583. The next prime is 45971622667. The reversal of 45971622661 is 16622617954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16622617954 = 2 ⋅8311308977.

It can be written as a sum of positive squares in 2 ways, for example, as 27792224100 + 18179398561 = 166710^2 + 134831^2 .

It is a cyclic number.

It is not a de Polignac number, because 45971622661 - 2¹⁷ = 45971491589 is a prime.

It is a super-2 number, since 2×45971622661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45971622667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95376570 + ... + 95377051.

It is an arithmetic number, because the mean of its divisors is an integer number (11540594131).

Almost surely, 2^45971622661 is an apocalyptic number.

It is an amenable number.

45971622661 is a deficient number, since it is larger than the sum of its proper divisors (190753863).

45971622661 is a wasteful number, since it uses less digits than its factorization.

45971622661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190753862.

The product of its digits is 1088640, while the sum is 49.

The spelling of 45971622661 in words is "forty-five billion, nine hundred seventy-one million, six hundred twenty-two thousand, six hundred sixty-one".