8545257087381 has 24 divisors (see below), whose sum is σ = 14106632941440. Its totient is φ = 4882942850976.

The previous prime is 8545257087349. The next prime is 8545257087403. The reversal of 8545257087381 is 1837807525458.

8545257087381 is a `hidden beast` number, since 8 + 5 + 4 + 52 + 570 + 8 + 7 + 3 + 8 + 1 = 666.

It is not a de Polignac number, because 8545257087381 - 2⁵ = 8545257087349 is a prime.

It is a super-2 number, since 2×8545257087381² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8545257087331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4479760 + ... + 6095798.

It is an arithmetic number, because the mean of its divisors is an integer number (587776372560).

Almost surely, 2^{8545257087381} is an apocalyptic number.

It is an amenable number.

8545257087381 is a deficient number, since it is larger than the sum of its proper divisors (5561375854059).

8545257087381 is a wasteful number, since it uses less digits than its factorization.

8545257087381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699985 (or 1699982 counting only the distinct ones).

The product of its (nonzero) digits is 75264000, while the sum is 63.

The spelling of 8545257087381 in words is "eight trillion, five hundred forty-five billion, two hundred fifty-seven million, eighty-seven thousand, three hundred eighty-one".