1501120255401 has 12 divisors (see below), whose sum is σ = 2335075953028. Its totient is φ = 923766310944.

The previous prime is 1501120255399. The next prime is 1501120255417. The reversal of 1501120255401 is 1045520211051.

It is a happy number.

1501120255401 is a `hidden beast` number, since 1 + 5 + 0 + 1 + 1 + 2 + 0 + 255 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 276886440000 + 1224233815401 = 526200^2 + 1106451^2 .

It is not a de Polignac number, because 1501120255401 - 2¹ = 1501120255399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1501120255501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6415043710 + ... + 6415043943.

Almost surely, 2^{1501120255401} is an apocalyptic number.

It is an amenable number.

1501120255401 is a deficient number, since it is larger than the sum of its proper divisors (833955697627).

1501120255401 is a wasteful number, since it uses less digits than its factorization.

1501120255401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830087672 (or 12830087669 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 1501120255401 its reverse (1045520211051), we get a palindrome (2546640466452).

The spelling of 1501120255401 in words is "one trillion, five hundred one billion, one hundred twenty million, two hundred fifty-five thousand, four hundred one".