493220051491 has 4 divisors (see below), whose sum is σ = 496985090184. Its totient is φ = 489455012800.

The previous prime is 493220051483. The next prime is 493220051549. The reversal of 493220051491 is 194150022394.

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 493220051491 - 2³ = 493220051483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493220051461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1882519150 + ... + 1882519411.

It is an arithmetic number, because the mean of its divisors is an integer number (124246272546).

Almost surely, 2^493220051491 is an apocalyptic number.

493220051491 is a deficient number, since it is larger than the sum of its proper divisors (3765038693).

493220051491 is a wasteful number, since it uses less digits than its factorization.

493220051491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765038692.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 493220051491 in words is "four hundred ninety-three billion, two hundred twenty million, fifty-one thousand, four hundred ninety-one".