1215660622253 has 8 divisors (see below), whose sum is σ = 1515628827840. Its totient is φ = 947268017280.

The previous prime is 1215660622237. The next prime is 1215660622279. The reversal of 1215660622253 is 3522260665121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215660622253 - 2⁴ = 1215660622237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215660622253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215660622213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7893900068 + ... + 7893900221.

It is an arithmetic number, because the mean of its divisors is an integer number (189453603480).

Almost surely, 2^{1215660622253} is an apocalyptic number.

It is an amenable number.

1215660622253 is a deficient number, since it is larger than the sum of its proper divisors (299968205587).

1215660622253 is a wasteful number, since it uses less digits than its factorization.

1215660622253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15787800307.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1215660622253 in words is "one trillion, two hundred fifteen billion, six hundred sixty million, six hundred twenty-two thousand, two hundred fifty-three".