8451659172047 has 16 divisors (see below), whose sum is σ = 10402476252672. Its totient is φ = 6686747912160.

The previous prime is 8451659172013. The next prime is 8451659172097. The reversal of 8451659172047 is 7402719561548.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8451659172047 - 2¹² = 8451659167951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8451659172097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267422 + ... + 4120052.

It is an arithmetic number, because the mean of its divisors is an integer number (650154765792).

Almost surely, 2^{8451659172047} is an apocalyptic number.

8451659172047 is a deficient number, since it is larger than the sum of its proper divisors (1950817080625).

8451659172047 is a wasteful number, since it uses less digits than its factorization.

8451659172047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876758.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 8451659172047 in words is "eight trillion, four hundred fifty-one billion, six hundred fifty-nine million, one hundred seventy-two thousand, forty-seven".