45312340640 has 96 divisors (see below), whose sum is σ = 125327430144. Its totient is φ = 15156725760.

The previous prime is 45312340637. The next prime is 45312340669. The reversal of 45312340640 is 4604321354.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 45312340597 and 45312340606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447464 + ... + 539303.

It is an arithmetic number, because the mean of its divisors is an integer number (1305494064).

Almost surely, 2^45312340640 is an apocalyptic number.

45312340640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45312340640 is an abundant number, since it is smaller than the sum of its proper divisors (80015089504).

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

45312340640 is a wasteful number, since it uses less digits than its factorization.

45312340640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986830 (or 986822 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 45312340640 its reverse (4604321354), we get a palindrome (49916661994).

The spelling of 45312340640 in words is "forty-five billion, three hundred twelve million, three hundred forty thousand, six hundred forty".