8451978372573 has 8 divisors (see below), whose sum is σ = 11269326753408. Its totient is φ = 5634641120064.

The previous prime is 8451978372557. The next prime is 8451978372587. The reversal of 8451978372573 is 3752738791548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8451978372573 - 2⁴ = 8451978372557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8451978372498 and 8451978372507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8451978372503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810261 + ... + 4190522.

It is an arithmetic number, because the mean of its divisors is an integer number (1408665844176).

Almost surely, 2^{8451978372573} is an apocalyptic number.

It is an amenable number.

8451978372573 is a deficient number, since it is larger than the sum of its proper divisors (2817348380835).

8451978372573 is a wasteful number, since it uses less digits than its factorization.

8451978372573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564163.

The product of its digits is 355622400, while the sum is 69.

The spelling of 8451978372573 in words is "eight trillion, four hundred fifty-one billion, nine hundred seventy-eight million, three hundred seventy-two thousand, five hundred seventy-three".