8619744742747 has 4 divisors (see below), whose sum is σ = 8622903318120. Its totient is φ = 8616586167376.

The previous prime is 8619744742733. The next prime is 8619744742793. The reversal of 8619744742747 is 7472474479168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8619744742747 - 2³⁵ = 8585385004379 is a prime.

It is a super-2 number, since 2×8619744742747² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8619744742447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579283593 + ... + 1579289050.

It is an arithmetic number, because the mean of its divisors is an integer number (2155725829530).

Almost surely, 2^{8619744742747} is an apocalyptic number.

8619744742747 is a deficient number, since it is larger than the sum of its proper divisors (3158575373).

8619744742747 is a wasteful number, since it uses less digits than its factorization.

8619744742747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158575372.

The product of its digits is 531062784, while the sum is 70.

The spelling of 8619744742747 in words is "eight trillion, six hundred nineteen billion, seven hundred forty-four million, seven hundred forty-two thousand, seven hundred forty-seven".