45423406644 has 96 divisors (see below), whose sum is σ = 133424019456. Its totient is φ = 11683716480.

The previous prime is 45423406627. The next prime is 45423406657. The reversal of 45423406644 is 44660432454.

It is a happy number.

It is a super-2 number, since 2×45423406644² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 45423406596 and 45423406605.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 143467 + ... + 333810.

It is an arithmetic number, because the mean of its divisors is an integer number (1389833536).

Almost surely, 2^45423406644 is an apocalyptic number.

45423406644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

45423406644 is an abundant number, since it is smaller than the sum of its proper divisors (88000612812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45423406644 is a wasteful number, since it uses less digits than its factorization.

45423406644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477405 (or 477403 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 45423406644 in words is "forty-five billion, four hundred twenty-three million, four hundred six thousand, six hundred forty-four".