8681529745 has 64 divisors (see below), whose sum is σ = 12666829824. Its totient is φ = 5583790080.

The previous prime is 8681529737. The next prime is 8681529803. The reversal of 8681529745 is 5479251868.

It is a happy number.

It is not a de Polignac number, because 8681529745 - 2³ = 8681529737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14162059 + ... + 14162671.

It is an arithmetic number, because the mean of its divisors is an integer number (197919216).

Almost surely, 2^8681529745 is an apocalyptic number.

It is an amenable number.

8681529745 is a deficient number, since it is larger than the sum of its proper divisors (3985300079).

8681529745 is a wasteful number, since it uses less digits than its factorization.

8681529745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 4838400, while the sum is 55.

The square root of 8681529745 is about 93174.7269649877. The cubic root of 8681529745 is about 2055.2536075815.

The spelling of 8681529745 in words is "eight billion, six hundred eighty-one million, five hundred twenty-nine thousand, seven hundred forty-five".