45120051020 has 48 divisors (see below), whose sum is σ = 104024396448. Its totient is φ = 16302773760.

The previous prime is 45120051007. The next prime is 45120051023. The reversal of 45120051020 is 2015002154.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 45120050983 and 45120051001.

It is not an unprimeable number, because it can be changed into a prime (45120051023) 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 15 ways as a sum of consecutive naturals, for example, 618617 + ... + 687696.

It is an arithmetic number, because the mean of its divisors is an integer number (2167174926).

Almost surely, 2^45120051020 is an apocalyptic number.

It is an amenable number.

45120051020 is an abundant number, since it is smaller than the sum of its proper divisors (58904345428).

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

45120051020 is a wasteful number, since it uses less digits than its factorization.

45120051020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306490 (or 1306488 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 45120051020 its reverse (2015002154), we get a palindrome (47135053174).

The spelling of 45120051020 in words is "forty-five billion, one hundred twenty million, fifty-one thousand, twenty".