642454334335 has 16 divisors (see below), whose sum is σ = 877597701120. Its totient is φ = 446924753440.

The previous prime is 642454334299. The next prime is 642454334341. The reversal of 642454334335 is 533433454246.

It is a happy number.

It is not a de Polignac number, because 642454334335 - 2¹⁷ = 642454203263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253933255 + ... + 253935784.

It is an arithmetic number, because the mean of its divisors is an integer number (54849856320).

Almost surely, 2^642454334335 is an apocalyptic number.

642454334335 is a deficient number, since it is larger than the sum of its proper divisors (235143366785).

642454334335 is a wasteful number, since it uses less digits than its factorization.

642454334335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507869078.

The product of its digits is 6220800, while the sum is 46.

The spelling of 642454334335 in words is "six hundred forty-two billion, four hundred fifty-four million, three hundred thirty-four thousand, three hundred thirty-five".