816926629242 has 16 divisors (see below), whose sum is σ = 1633862164032. Its totient is φ = 272307392160.

The previous prime is 816926629223. The next prime is 816926629271. The reversal of 816926629242 is 242926629618.

It is a happy number.

It is a super-2 number, since 2×816926629242² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786267 + ... + 2196497.

It is an arithmetic number, because the mean of its divisors is an integer number (102116385252).

Almost surely, 2^816926629242 is an apocalyptic number.

816926629242 is an abundant number, since it is smaller than the sum of its proper divisors (816935534790).

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

816926629242 is a wasteful number, since it uses less digits than its factorization.

816926629242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742133.

The product of its digits is 8957952, while the sum is 57.

The spelling of 816926629242 in words is "eight hundred sixteen billion, nine hundred twenty-six million, six hundred twenty-nine thousand, two hundred forty-two".