1215255583473 has 16 divisors (see below), whose sum is σ = 1624220209920. Its totient is φ = 808230991104.

The previous prime is 1215255583429. The next prime is 1215255583543. The reversal of 1215255583473 is 3743855525121.

It is not a de Polignac number, because 1215255583473 - 2¹⁶ = 1215255517937 is a prime.

It is a super-2 number, since 2×1215255583473² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1215255583273) 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, 18775915 + ... + 18840527.

It is an arithmetic number, because the mean of its divisors is an integer number (101513763120).

Almost surely, 2^{1215255583473} is an apocalyptic number.

It is an amenable number.

1215255583473 is a deficient number, since it is larger than the sum of its proper divisors (408964626447).

1215255583473 is a wasteful number, since it uses less digits than its factorization.

1215255583473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79528.

The product of its digits is 5040000, while the sum is 51.

The spelling of 1215255583473 in words is "one trillion, two hundred fifteen billion, two hundred fifty-five million, five hundred eighty-three thousand, four hundred seventy-three".