72016783685 has 16 divisors (see below), whose sum is σ = 107744591232. Its totient is φ = 44893579200.

The previous prime is 72016783673. The next prime is 72016783691. The reversal of 72016783685 is 58638761027.

It is not a de Polignac number, because 72016783685 - 2¹⁴ = 72016767301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93527906 + ... + 93528675.

It is an arithmetic number, because the mean of its divisors is an integer number (6734036952).

Almost surely, 2^72016783685 is an apocalyptic number.

It is an amenable number.

72016783685 is a deficient number, since it is larger than the sum of its proper divisors (35727807547).

72016783685 is a wasteful number, since it uses less digits than its factorization.

72016783685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187056604.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 72016783685 in words is "seventy-two billion, sixteen million, seven hundred eighty-three thousand, six hundred eighty-five".