8218539215051 has 8 divisors (see below), whose sum is σ = 9437556993600. Its totient is φ = 7078167744840.

The previous prime is 8218539215023. The next prime is 8218539215069. The reversal of 8218539215051 is 1505129358128.

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-8218539215051 is a prime.

It is a super-2 number, since 2×8218539215051² (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 (8218539215951) 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, 19661576861 + ... + 19661577278.

It is an arithmetic number, because the mean of its divisors is an integer number (1179694624200).

Almost surely, 2^{8218539215051} is an apocalyptic number.

8218539215051 is a deficient number, since it is larger than the sum of its proper divisors (1219017778549).

8218539215051 is a wasteful number, since it uses less digits than its factorization.

8218539215051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39323154169.

The product of its (nonzero) digits is 864000, while the sum is 50.

The spelling of 8218539215051 in words is "eight trillion, two hundred eighteen billion, five hundred thirty-nine million, two hundred fifteen thousand, fifty-one".