6815147973 has 32 divisors (see below), whose sum is σ = 9459597312. Its totient is φ = 4359724800.

The previous prime is 6815147971. The next prime is 6815148023. The reversal of 6815147973 is 3797415186.

It is a happy number.

It is not a de Polignac number, because 6815147973 - 2¹ = 6815147971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6815147971) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10533136 + ... + 10533782.

It is an arithmetic number, because the mean of its divisors is an integer number (295612416).

Almost surely, 2^6815147973 is an apocalyptic number.

It is an amenable number.

6815147973 is a deficient number, since it is larger than the sum of its proper divisors (2644449339).

6815147973 is a wasteful number, since it uses less digits than its factorization.

6815147973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its digits is 1270080, while the sum is 51.

The square root of 6815147973 is about 82553.9094955533. The cubic root of 6815147973 is about 1895.9422147529.

The spelling of 6815147973 in words is "six billion, eight hundred fifteen million, one hundred forty-seven thousand, nine hundred seventy-three".