2215155251447 has 16 divisors (see below), whose sum is σ = 2391274621440. Its totient is φ = 2045692838112.

The previous prime is 2215155251363. The next prime is 2215155251467. The reversal of 2215155251447 is 7441525515122.

It is a cyclic number.

It is not a de Polignac number, because 2215155251447 - 2¹⁶ = 2215155185911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215155251398 and 2215155251407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215155251467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19541948 + ... + 19654974.

It is an arithmetic number, because the mean of its divisors is an integer number (149454663840).

Almost surely, 2^{2215155251447} is an apocalyptic number.

2215155251447 is a deficient number, since it is larger than the sum of its proper divisors (176119369993).

2215155251447 is a wasteful number, since it uses less digits than its factorization.

2215155251447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142462.

The product of its digits is 560000, while the sum is 44.

The spelling of 2215155251447 in words is "two trillion, two hundred fifteen billion, one hundred fifty-five million, two hundred fifty-one thousand, four hundred forty-seven".