66011061025 has 48 divisors (see below), whose sum is σ = 101145276288. Its totient is φ = 41616000000.

The previous prime is 66011061023. The next prime is 66011061031. The reversal of 66011061025 is 52016011066.

It is not a de Polignac number, because 66011061025 - 2¹ = 66011061023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66011060984 and 66011061002.

It is not an unprimeable number, because it can be changed into a prime (66011061023) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 513225 + ... + 628825.

It is an arithmetic number, because the mean of its divisors is an integer number (2107193256).

Almost surely, 2^66011061025 is an apocalyptic number.

66011061025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66011061025 is a deficient number, since it is larger than the sum of its proper divisors (35134215263).

66011061025 is a wasteful number, since it uses less digits than its factorization.

66011061025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115882 (or 115877 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 66011061025 in words is "sixty-six billion, eleven million, sixty-one thousand, twenty-five".