40345131540 has 48 divisors (see below), whose sum is σ = 129104422272. Its totient is φ = 9221744256.

The previous prime is 40345131529. The next prime is 40345131553. The reversal of 40345131540 is 4513154304.

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 = 40345131498 and 40345131507.

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, 48029499 + ... + 48030338.

It is an arithmetic number, because the mean of its divisors is an integer number (2689675464).

Almost surely, 2^40345131540 is an apocalyptic number.

It is an amenable number.

40345131540 is an abundant number, since it is smaller than the sum of its proper divisors (88759290732).

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

40345131540 is a wasteful number, since it uses less digits than its factorization.

40345131540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96059856 (or 96059854 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 40345131540 its reverse (4513154304), we get a palindrome (44858285844).

The spelling of 40345131540 in words is "forty billion, three hundred forty-five million, one hundred thirty-one thousand, five hundred forty".