40453132440 has 64 divisors (see below), whose sum is σ = 138696456960. Its totient is φ = 9246430080.

The previous prime is 40453132409. The next prime is 40453132457. The reversal of 40453132440 is 4423135404.

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 = 40453132398 and 40453132407.

It is a congruent number.

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, 24078406 + ... + 24080085.

It is an arithmetic number, because the mean of its divisors is an integer number (2167132140).

Almost surely, 2^40453132440 is an apocalyptic number.

40453132440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40453132440 is an abundant number, since it is smaller than the sum of its proper divisors (98243324520).

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

40453132440 is a wasteful number, since it uses less digits than its factorization.

40453132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48158512 (or 48158508 counting only the distinct ones).

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

Adding to 40453132440 its reverse (4423135404), we get a palindrome (44876267844).

The spelling of 40453132440 in words is "forty billion, four hundred fifty-three million, one hundred thirty-two thousand, four hundred forty".