427912920197 has 16 divisors (see below), whose sum is σ = 511209062400. Its totient is φ = 350457747120.

The previous prime is 427912920187. The next prime is 427912920221. The reversal of 427912920197 is 791029219724.

It is a cyclic number.

It is not a de Polignac number, because 427912920197 - 2²⁴ = 427896142981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427912920107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12463547 + ... + 12497832.

It is an arithmetic number, because the mean of its divisors is an integer number (31950566400).

Almost surely, 2^427912920197 is an apocalyptic number.

It is an amenable number.

427912920197 is a deficient number, since it is larger than the sum of its proper divisors (83296142203).

427912920197 is a wasteful number, since it uses less digits than its factorization.

427912920197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24961496.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 427912920197 in words is "four hundred twenty-seven billion, nine hundred twelve million, nine hundred twenty thousand, one hundred ninety-seven".