11980478921025 has 24 divisors (see below), whose sum is σ = 19812749154880. Its totient is φ = 6387968111040.

The previous prime is 11980478920957. The next prime is 11980478921027. The reversal of 11980478921025 is 52012987408911.

It is a happy number.

It is not a de Polignac number, because 11980478921025 - 2⁹ = 11980478920513 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (11980478921027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19960390 + ... + 20551839.

Almost surely, 2^{11980478921025} is an apocalyptic number.

11980478921025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11980478921025 is a deficient number, since it is larger than the sum of its proper divisors (7832270233855).

11980478921025 is a wasteful number, since it uses less digits than its factorization.

11980478921025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40516185 (or 40516180 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 57.

The spelling of 11980478921025 in words is "eleven trillion, nine hundred eighty billion, four hundred seventy-eight million, nine hundred twenty-one thousand, twenty-five".