82129151568 has 20 divisors (see below), whose sum is σ = 212166975008. Its totient is φ = 27376383840.

The previous prime is 82129151551. The next prime is 82129151569. The reversal of 82129151568 is 86515192128.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1711023991 = 82129151568 / (8 + 2 + 1 + 2 + 9 + 1 + 5 + 1 + 5 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82129151569) 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, 855511948 + ... + 855512043.

Almost surely, 2^82129151568 is an apocalyptic number.

It is an amenable number.

82129151568 is an abundant number, since it is smaller than the sum of its proper divisors (130037823440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82129151568 is a wasteful number, since it uses less digits than its factorization.

82129151568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711024002 (or 1711023996 counting only the distinct ones).

The product of its digits is 345600, while the sum is 48.

The spelling of 82129151568 in words is "eighty-two billion, one hundred twenty-nine million, one hundred fifty-one thousand, five hundred sixty-eight".