72206051651156 has 12 divisors (see below), whose sum is σ = 127883007141792. Its totient is φ = 35668049610648.

The previous prime is 72206051651137. The next prime is 72206051651159. The reversal of 72206051651156 is 65115615060227.

It is a super-2 number, since 2×72206051651156² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72206051651156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72206051651159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108744053360 + ... + 108744054023.

It is an arithmetic number, because the mean of its divisors is an integer number (10656917261816).

Almost surely, 2^{72206051651156} is an apocalyptic number.

It is an amenable number.

72206051651156 is a deficient number, since it is larger than the sum of its proper divisors (55676955490636).

72206051651156 is a wasteful number, since it uses less digits than its factorization.

72206051651156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217488107470 (or 217488107468 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 72206051651156 in words is "seventy-two trillion, two hundred six billion, fifty-one million, six hundred fifty-one thousand, one hundred fifty-six".