72016903667 has 4 divisors (see below), whose sum is σ = 76253192136. Its totient is φ = 67780615200.

The previous prime is 72016903657. The next prime is 72016903681. The reversal of 72016903667 is 76630961027.

It is a happy number.

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 72016903667 - 2¹⁸ = 72016641523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72016903627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118144209 + ... + 2118144242.

It is an arithmetic number, because the mean of its divisors is an integer number (19063298034).

Almost surely, 2^72016903667 is an apocalyptic number.

72016903667 is a deficient number, since it is larger than the sum of its proper divisors (4236288469).

72016903667 is a wasteful number, since it uses less digits than its factorization.

72016903667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236288468.

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 72016903667 in words is "seventy-two billion, sixteen million, nine hundred three thousand, six hundred sixty-seven".