72211627167445 has 4 divisors (see below), whose sum is σ = 86653952600940. Its totient is φ = 57769301733952.

The previous prime is 72211627167397. The next prime is 72211627167481. The reversal of 72211627167445 is 54476172611227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23884117831044 + 48327509336401 = 4887138^2 + 6951799^2 .

It is a cyclic number.

It is not a de Polignac number, because 72211627167445 - 2¹³ = 72211627159253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7221162716740 + ... + 7221162716749.

It is an arithmetic number, because the mean of its divisors is an integer number (21663488150235).

Almost surely, 2^{72211627167445} is an apocalyptic number.

It is an amenable number.

72211627167445 is a deficient number, since it is larger than the sum of its proper divisors (14442325433495).

72211627167445 is a wasteful number, since it uses less digits than its factorization.

72211627167445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442325433494.

The product of its digits is 7902720, while the sum is 55.

The spelling of 72211627167445 in words is "seventy-two trillion, two hundred eleven billion, six hundred twenty-seven million, one hundred sixty-seven thousand, four hundred forty-five".