642453051226 has 8 divisors (see below), whose sum is σ = 1101348087840. Its totient is φ = 275337021948.

The previous prime is 642453051209. The next prime is 642453051241. The reversal of 642453051226 is 622150354246.

It is a happy number.

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, 22944751816 + ... + 22944751843.

It is an arithmetic number, because the mean of its divisors is an integer number (137668510980).

Almost surely, 2^642453051226 is an apocalyptic number.

642453051226 is a deficient number, since it is larger than the sum of its proper divisors (458895036614).

642453051226 is a wasteful number, since it uses less digits than its factorization.

642453051226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45889503668.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 642453051226 in words is "six hundred forty-two billion, four hundred fifty-three million, fifty-one thousand, two hundred twenty-six".