72155606652212 has 12 divisors (see below), whose sum is σ = 126276646482336. Its totient is φ = 36076564800120.

The previous prime is 72155606652203. The next prime is 72155606652223. The reversal of 72155606652212 is 21225660655127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309500408 + ... + 309733455.

It is an arithmetic number, because the mean of its divisors is an integer number (10523053873528).

Almost surely, 2^{72155606652212} is an apocalyptic number.

It is an amenable number.

72155606652212 is a deficient number, since it is larger than the sum of its proper divisors (54121039830124).

72155606652212 is a wasteful number, since it uses less digits than its factorization.

72155606652212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619262998 (or 619262996 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 72155606652212 in words is "seventy-two trillion, one hundred fifty-five billion, six hundred six million, six hundred fifty-two thousand, two hundred twelve".