216761771632 has 40 divisors (see below), whose sum is σ = 480016678752. Its totient is φ = 92889350400.

The previous prime is 216761771593. The next prime is 216761771717. The reversal of 216761771632 is 236177167612.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 1218282 + ... + 1384822.

Almost surely, 2^216761771632 is an apocalyptic number.

It is an amenable number.

216761771632 is an abundant number, since it is smaller than the sum of its proper divisors (263254907120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216761771632 is a wasteful number, since it uses less digits than its factorization.

216761771632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178177 (or 178171 counting only the distinct ones).

The product of its digits is 889056, while the sum is 49.

The spelling of 216761771632 in words is "two hundred sixteen billion, seven hundred sixty-one million, seven hundred seventy-one thousand, six hundred thirty-two".