216773657476 has 24 divisors (see below), whose sum is σ = 385766184384. Its totient is φ = 106556530080.

The previous prime is 216773657449. The next prime is 216773657501. The reversal of 216773657476 is 674756377612.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266961 + ... + 710503.

It is an arithmetic number, because the mean of its divisors is an integer number (16073591016).

Almost surely, 2^216773657476 is an apocalyptic number.

It is an amenable number.

216773657476 is a deficient number, since it is larger than the sum of its proper divisors (168992526908).

216773657476 is a wasteful number, since it uses less digits than its factorization.

216773657476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445611 (or 445609 counting only the distinct ones).

The product of its digits is 62233920, while the sum is 61.

The spelling of 216773657476 in words is "two hundred sixteen billion, seven hundred seventy-three million, six hundred fifty-seven thousand, four hundred seventy-six".