869397202642 has 8 divisors (see below), whose sum is σ = 1304580786300. Its totient is φ = 434536940544.

The previous prime is 869397202631. The next prime is 869397202649. The reversal of 869397202642 is 246202793968.

It can be written as a sum of positive squares in 2 ways, for example, as 584519882521 + 284877320121 = 764539^2 + 533739^2 .

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

It is not an unprimeable number, because it can be changed into a prime (869397202649) 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, 80823667 + ... + 80834422.

Almost surely, 2^869397202642 is an apocalyptic number.

869397202642 is a deficient number, since it is larger than the sum of its proper divisors (435183583658).

869397202642 is a wasteful number, since it uses less digits than its factorization.

869397202642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161660780.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 869397202642 in words is "eight hundred sixty-nine billion, three hundred ninety-seven million, two hundred two thousand, six hundred forty-two".