216166051516 has 24 divisors (see below), whose sum is σ = 391260804480. Its totient is φ = 104390952000.

The previous prime is 216166051499. The next prime is 216166051559. The reversal of 216166051516 is 615150661612.

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, 1649335 + ... + 1775566.

It is an arithmetic number, because the mean of its divisors is an integer number (16302533520).

Almost surely, 2^216166051516 is an apocalyptic number.

It is an amenable number.

216166051516 is a deficient number, since it is larger than the sum of its proper divisors (175094752964).

216166051516 is a wasteful number, since it uses less digits than its factorization.

216166051516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425445 (or 3425443 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 216166051516 in words is "two hundred sixteen billion, one hundred sixty-six million, fifty-one thousand, five hundred sixteen".