102820867102258 has 8 divisors (see below), whose sum is σ = 154240896377628. Its totient is φ = 51407234976384.

The previous prime is 102820867102249. The next prime is 102820867102301. The reversal of 102820867102258 is 852201768028201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84815755945209 + 18005111157049 = 9209547^2 + 4243243^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599247191 + ... + 1599311482.

Almost surely, 2^{102820867102258} is an apocalyptic number.

102820867102258 is a deficient number, since it is larger than the sum of its proper divisors (51420029275370).

102820867102258 is a wasteful number, since it uses less digits than its factorization.

102820867102258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198574748.

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 102820867102258 in words is "one hundred two trillion, eight hundred twenty billion, eight hundred sixty-seven million, one hundred two thousand, two hundred fifty-eight".