1237258006985 has 48 divisors (see below), whose sum is σ = 2008558288128. Its totient is φ = 711948631680.

The previous prime is 1237258006871. The next prime is 1237258007017. The reversal of 1237258006985 is 5896008527321.

It is a happy number.

It is not a de Polignac number, because 1237258006985 - 2¹² = 1237258002889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1237258006985.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11181509 + ... + 11291618.

It is an arithmetic number, because the mean of its divisors is an integer number (41844964336).

Almost surely, 2^{1237258006985} is an apocalyptic number.

It is an amenable number.

1237258006985 is a deficient number, since it is larger than the sum of its proper divisors (771300281143).

1237258006985 is a wasteful number, since it uses less digits than its factorization.

1237258006985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22473174 (or 22473163 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 56.

Adding to 1237258006985 its sum of digits (56), we get a square (1237258007041 = 1112321²).

The spelling of 1237258006985 in words is "one trillion, two hundred thirty-seven billion, two hundred fifty-eight million, six thousand, nine hundred eighty-five".