45661745619 has 48 divisors (see below), whose sum is σ = 75810039552. Its totient is φ = 25943333184.

The previous prime is 45661745603. The next prime is 45661745639. The reversal of 45661745619 is 91654716654.

45661745619 is a `hidden beast` number, since 4 + 5 + 6 + 6 + 1 + 74 + 561 + 9 = 666.

It is not a de Polignac number, because 45661745619 - 2⁴ = 45661745603 is a prime.

It is a super-2 number, since 2×45661745619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45661745639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9124372 + ... + 9129374.

It is an arithmetic number, because the mean of its divisors is an integer number (1579375824).

Almost surely, 2^45661745619 is an apocalyptic number.

45661745619 is a deficient number, since it is larger than the sum of its proper divisors (30148293933).

45661745619 is a wasteful number, since it uses less digits than its factorization.

45661745619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816 (or 5813 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 45661745619 in words is "forty-five billion, six hundred sixty-one million, seven hundred forty-five thousand, six hundred nineteen".