45840851820 has 72 divisors (see below), whose sum is σ = 140427378000. Its totient is φ = 12103190400.

The previous prime is 45840851801. The next prime is 45840851851. The reversal of 45840851820 is 2815804854.

45840851820 is a `hidden beast` number, since 458 + 40 + 85 + 1 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1242570 + ... + 1278929.

It is an arithmetic number, because the mean of its divisors is an integer number (1950380250).

Almost surely, 2^45840851820 is an apocalyptic number.

It is an amenable number.

45840851820 is an abundant number, since it is smaller than the sum of its proper divisors (94586526180).

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

45840851820 is a wasteful number, since it uses less digits than its factorization.

45840851820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521615 (or 2521610 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

The spelling of 45840851820 in words is "forty-five billion, eight hundred forty million, eight hundred fifty-one thousand, eight hundred twenty".