8155327667421 has 8 divisors (see below), whose sum is σ = 11862294789024. Its totient is φ = 4942622828720.

The previous prime is 8155327667387. The next prime is 8155327667429. The reversal of 8155327667421 is 1247667235518.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8155327667421 - 2¹³ = 8155327659229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155327667429) 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, 123565570686 + ... + 123565570751.

It is an arithmetic number, because the mean of its divisors is an integer number (1482786848628).

Almost surely, 2^{8155327667421} is an apocalyptic number.

It is an amenable number.

8155327667421 is a deficient number, since it is larger than the sum of its proper divisors (3706967121603).

8155327667421 is a wasteful number, since it uses less digits than its factorization.

8155327667421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247131141451.

The product of its digits is 16934400, while the sum is 57.

The spelling of 8155327667421 in words is "eight trillion, one hundred fifty-five billion, three hundred twenty-seven million, six hundred sixty-seven thousand, four hundred twenty-one".