827169916442 has 4 divisors (see below), whose sum is σ = 1240754874666. Its totient is φ = 413584958220.

The previous prime is 827169916429. The next prime is 827169916457. The reversal of 827169916442 is 244619961728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 499906975681 + 327262940761 = 707041^2 + 572069^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206792479109 + ... + 206792479112.

Almost surely, 2^827169916442 is an apocalyptic number.

827169916442 is a deficient number, since it is larger than the sum of its proper divisors (413584958224).

827169916442 is a wasteful number, since it uses less digits than its factorization.

827169916442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413584958223.

The product of its digits is 10450944, while the sum is 59.

The spelling of 827169916442 in words is "eight hundred twenty-seven billion, one hundred sixty-nine million, nine hundred sixteen thousand, four hundred forty-two".