45431302440 has 32 divisors (see below), whose sum is σ = 136293907680. Its totient is φ = 12115013952.

The previous prime is 45431302393. The next prime is 45431302459. The reversal of 45431302440 is 4420313454.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 45431302398 and 45431302407.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 189296974 + ... + 189297213.

It is an arithmetic number, because the mean of its divisors is an integer number (4259184615).

Almost surely, 2^45431302440 is an apocalyptic number.

45431302440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45431302440 is an abundant number, since it is smaller than the sum of its proper divisors (90862605240).

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

45431302440 is a wasteful number, since it uses less digits than its factorization.

45431302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378594201 (or 378594197 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 45431302440 its reverse (4420313454), we get a palindrome (49851615894).

The spelling of 45431302440 in words is "forty-five billion, four hundred thirty-one million, three hundred two thousand, four hundred forty".