8157618783481 has 8 divisors (see below), whose sum is σ = 8236895707584. Its totient is φ = 8078398109520.

The previous prime is 8157618783467. The next prime is 8157618783529. The reversal of 8157618783481 is 1843878167518.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8157618783481 is a prime.

It is a super-2 number, since 2×8157618783481² (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 (8157618783401) 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, 13771050 + ... + 14351203.

It is an arithmetic number, because the mean of its divisors is an integer number (1029611963448).

Almost surely, 2^{8157618783481} is an apocalyptic number.

It is an amenable number.

8157618783481 is a deficient number, since it is larger than the sum of its proper divisors (79276924103).

8157618783481 is a wasteful number, since it uses less digits than its factorization.

8157618783481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125071.

The product of its digits is 72253440, while the sum is 67.

The spelling of 8157618783481 in words is "eight trillion, one hundred fifty-seven billion, six hundred eighteen million, seven hundred eighty-three thousand, four hundred eighty-one".