646425156201 has 8 divisors (see below), whose sum is σ = 940254772704. Its totient is φ = 391772821920.

The previous prime is 646425156197. The next prime is 646425156227. The reversal of 646425156201 is 102651524646.

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

It is not a de Polignac number, because 646425156201 - 2² = 646425156197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646425256201) 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, 9794320516 + ... + 9794320581.

It is an arithmetic number, because the mean of its divisors is an integer number (117531846588).

Almost surely, 2^646425156201 is an apocalyptic number.

It is an amenable number.

646425156201 is a deficient number, since it is larger than the sum of its proper divisors (293829616503).

646425156201 is a wasteful number, since it uses less digits than its factorization.

646425156201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19588641111.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 646425156201 in words is "six hundred forty-six billion, four hundred twenty-five million, one hundred fifty-six thousand, two hundred one".