45581904040 has 32 divisors (see below), whose sum is σ = 104944387680. Its totient is φ = 17808743232.

The previous prime is 45581904023. The next prime is 45581904047. The reversal of 45581904040 is 4040918554.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 45581903984 and 45581904002.

It is not an unprimeable number, because it can be changed into a prime (45581904047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13248834 + ... + 13252273.

It is an arithmetic number, because the mean of its divisors is an integer number (3279512115).

Almost surely, 2^45581904040 is an apocalyptic number.

45581904040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45581904040 is an abundant number, since it is smaller than the sum of its proper divisors (59362483640).

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

45581904040 is a wasteful number, since it uses less digits than its factorization.

45581904040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26501161 (or 26501157 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 45581904040 in words is "forty-five billion, five hundred eighty-one million, nine hundred four thousand, forty".