642454065035 has 4 divisors (see below), whose sum is σ = 770944878048. Its totient is φ = 513963252024.

The previous prime is 642454065007. The next prime is 642454065053. The reversal of 642454065035 is 530560454246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 642454065035 - 2⁶ = 642454064971 is a prime.

It is a Duffinian number.

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, 64245406499 + ... + 64245406508.

It is an arithmetic number, because the mean of its divisors is an integer number (192736219512).

Almost surely, 2^642454065035 is an apocalyptic number.

642454065035 is a deficient number, since it is larger than the sum of its proper divisors (128490813013).

642454065035 is a wasteful number, since it uses less digits than its factorization.

642454065035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128490813012.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 642454065035 in words is "six hundred forty-two billion, four hundred fifty-four million, sixty-five thousand, thirty-five".