642840153746001 has 8 divisors (see below), whose sum is σ = 863869182987264. Its totient is φ = 425185613501040.

The previous prime is 642840153745877. The next prime is 642840153746003. The reversal of 642840153746001 is 100647351048246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642840153746001 - 2¹⁴ = 642840153729617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (642840153746003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843622248630 + ... + 843622249391.

It is an arithmetic number, because the mean of its divisors is an integer number (107983647873408).

Almost surely, 2^{642840153746001} is an apocalyptic number.

It is an amenable number.

642840153746001 is a deficient number, since it is larger than the sum of its proper divisors (221029029241263).

642840153746001 is a wasteful number, since it uses less digits than its factorization.

642840153746001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687244498151.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 642840153746001 in words is "six hundred forty-two trillion, eight hundred forty billion, one hundred fifty-three million, seven hundred forty-six thousand, one".