1515054032440 has 48 divisors (see below), whose sum is σ = 3691263317400. Its totient is φ = 559404563328.

The previous prime is 1515054032399. The next prime is 1515054032449. The reversal of 1515054032440 is 442304505151.

It is a junction number, because it is equal to n+sod(n) for n = 1515054032396 and 1515054032405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515054032449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112053450 + ... + 112066969.

Almost surely, 2^{1515054032440} is an apocalyptic number.

1515054032440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1515054032440 is an abundant number, since it is smaller than the sum of its proper divisors (2176209284960).

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

1515054032440 is a wasteful number, since it uses less digits than its factorization.

1515054032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224120456 (or 224120439 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 1515054032440 its reverse (442304505151), we get a palindrome (1957358537591).

The spelling of 1515054032440 in words is "one trillion, five hundred fifteen billion, fifty-four million, thirty-two thousand, four hundred forty".