1520201066004 has 72 divisors (see below), whose sum is σ = 3948568041600. Its totient is φ = 492909380352.

The previous prime is 1520201065987. The next prime is 1520201066179. The reversal of 1520201066004 is 4006601020251.

1520201066004 is a `hidden beast` number, since 1 + 5 + 20 + 20 + 10 + 6 + 600 + 4 = 666.

It is a super-2 number, since 2×1520201066004² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2480229 + ... + 3031820.

It is an arithmetic number, because the mean of its divisors is an integer number (54841222800).

Almost surely, 2^{1520201066004} is an apocalyptic number.

It is an amenable number.

1520201066004 is an abundant number, since it is smaller than the sum of its proper divisors (2428366975596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1520201066004 is a wasteful number, since it uses less digits than its factorization.

1520201066004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512269 (or 5512264 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1520201066004 its reverse (4006601020251), we get a palindrome (5526802086255).

The spelling of 1520201066004 in words is "one trillion, five hundred twenty billion, two hundred one million, sixty-six thousand, four".