45919647644 has 24 divisors (see below), whose sum is σ = 86555293440. Its totient is φ = 21190152384.

The previous prime is 45919647629. The next prime is 45919647647. The reversal of 45919647644 is 44674691954.

It is a super-2 number, since 2×45919647644² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45919647647) 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 7 ways as a sum of consecutive naturals, for example, 255557 + ... + 396419.

It is an arithmetic number, because the mean of its divisors is an integer number (3606470560).

Almost surely, 2^45919647644 is an apocalyptic number.

It is an amenable number.

45919647644 is a deficient number, since it is larger than the sum of its proper divisors (40635645796).

45919647644 is a wasteful number, since it uses less digits than its factorization.

45919647644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147149 (or 147147 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 59.

The spelling of 45919647644 in words is "forty-five billion, nine hundred nineteen million, six hundred forty-seven thousand, six hundred forty-four".