45515432240 has 40 divisors (see below), whose sum is σ = 106225799328. Its totient is φ = 18136939520.

The previous prime is 45515432233. The next prime is 45515432243. The reversal of 45515432240 is 4223451554.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 45515432240.

It is not an unprimeable number, because it can be changed into a prime (45515432243) 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, 1060601 + ... + 1102680.

Almost surely, 2^45515432240 is an apocalyptic number.

45515432240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45515432240 is an abundant number, since it is smaller than the sum of its proper divisors (60710367088).

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

45515432240 is a wasteful number, since it uses less digits than its factorization.

45515432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163557 (or 2163551 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 45515432240 its reverse (4223451554), we get a palindrome (49738883794).

The spelling of 45515432240 in words is "forty-five billion, five hundred fifteen million, four hundred thirty-two thousand, two hundred forty".