45221745642 has 16 divisors (see below), whose sum is σ = 94375817280. Its totient is φ = 14418527552.

The previous prime is 45221745637. The next prime is 45221745649. The reversal of 45221745642 is 24654712254.

It is a junction number, because it is equal to n+sod(n) for n = 45221745594 and 45221745603.

It is not an unprimeable number, because it can be changed into a prime (45221745649) 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 7 ways as a sum of consecutive naturals, for example, 163846767 + ... + 163847042.

It is an arithmetic number, because the mean of its divisors is an integer number (5898488580).

Almost surely, 2^45221745642 is an apocalyptic number.

45221745642 is an abundant number, since it is smaller than the sum of its proper divisors (49154071638).

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

45221745642 is a wasteful number, since it uses less digits than its factorization.

45221745642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327693837.

The product of its digits is 537600, while the sum is 42.

The spelling of 45221745642 in words is "forty-five billion, two hundred twenty-one million, seven hundred forty-five thousand, six hundred forty-two".