45066619520 has 512 divisors, whose sum is σ = 127919554560. Its totient is φ = 15044198400.

The previous prime is 45066619513. The next prime is 45066619537. The reversal of 45066619520 is 2591666054.

It is a Cunningham number, because it is equal to 212289²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 421183307 + ... + 421183413.

It is an arithmetic number, because the mean of its divisors is an integer number (249842880).

Almost surely, 2^45066619520 is an apocalyptic number.

45066619520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45066619520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63959777280).

45066619520 is an abundant number, since it is smaller than the sum of its proper divisors (82852935040).

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

45066619520 is a wasteful number, since it uses less digits than its factorization.

45066619520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 45066619520 in words is "forty-five billion, sixty-six million, six hundred nineteen thousand, five hundred twenty".