15273147247820 has 144 divisors (see below), whose sum is σ = 42042590521344. Its totient is φ = 4553484777600.

The previous prime is 15273147247817. The next prime is 15273147247837. The reversal of 15273147247820 is 2874274137251.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 19210436 + ... + 19989675.

It is an arithmetic number, because the mean of its divisors is an integer number (291962434176).

Almost surely, 2^{15273147247820} is an apocalyptic number.

15273147247820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15273147247820 is an abundant number, since it is smaller than the sum of its proper divisors (26769443273524).

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

15273147247820 is a wasteful number, since it uses less digits than its factorization.

15273147247820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39200172 (or 39200159 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 53.

The spelling of 15273147247820 in words is "fifteen trillion, two hundred seventy-three billion, one hundred forty-seven million, two hundred forty-seven thousand, eight hundred twenty".