15532312520240 has 20 divisors (see below), whose sum is σ = 36112626609744. Its totient is φ = 6212925008064.

The previous prime is 15532312520233. The next prime is 15532312520261. The reversal of 15532312520240 is 4202521323551.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 15532312520240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97076953172 + ... + 97076953331.

Almost surely, 2^{15532312520240} is an apocalyptic number.

15532312520240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15532312520240 is an abundant number, since it is smaller than the sum of its proper divisors (20580314089504).

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

15532312520240 is a wasteful number, since it uses less digits than its factorization.

15532312520240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194153906516 (or 194153906510 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 15532312520240 its reverse (4202521323551), we get a palindrome (19734833843791).

The spelling of 15532312520240 in words is "fifteen trillion, five hundred thirty-two billion, three hundred twelve million, five hundred twenty thousand, two hundred forty".