642569883501 has 16 divisors (see below), whose sum is σ = 1054473655424. Its totient is φ = 338937960384.

The previous prime is 642569883443. The next prime is 642569883517. The reversal of 642569883501 is 105388965246.

It is not a de Polignac number, because 642569883501 - 2¹⁵ = 642569850733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642569883541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176867646 + ... + 1176868191.

It is an arithmetic number, because the mean of its divisors is an integer number (65904603464).

Almost surely, 2^642569883501 is an apocalyptic number.

It is an amenable number.

642569883501 is a deficient number, since it is larger than the sum of its proper divisors (411903771923).

642569883501 is a wasteful number, since it uses less digits than its factorization.

642569883501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353735860.

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 642569883501 in words is "six hundred forty-two billion, five hundred sixty-nine million, eight hundred eighty-three thousand, five hundred one".