72216001052 has 24 divisors (see below), whose sum is σ = 137012820000. Its totient is φ = 33106764096.

The previous prime is 72216001031. The next prime is 72216001061. The reversal of 72216001052 is 25010061227.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 4652552 + ... + 4668047.

It is an arithmetic number, because the mean of its divisors is an integer number (5708867500).

Almost surely, 2^72216001052 is an apocalyptic number.

It is an amenable number.

72216001052 is a deficient number, since it is larger than the sum of its proper divisors (64796818948).

72216001052 is a wasteful number, since it uses less digits than its factorization.

72216001052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320765 (or 9320763 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 72216001052 its reverse (25010061227), we get a palindrome (97226062279).

The spelling of 72216001052 in words is "seventy-two billion, two hundred sixteen million, one thousand, fifty-two".