661060226263331 has 4 divisors (see below), whose sum is σ = 661062325295472. Its totient is φ = 661058127231192.

The previous prime is 661060226263313. The next prime is 661060226263369. The reversal of 661060226263331 is 133362622060166.

661060226263331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 661060226263331 - 2²⁶ = 661060159154467 is a prime.

It is a super-2 number, since 2×661060226263331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (661060226263631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049043596 + ... + 1049673561.

It is an arithmetic number, because the mean of its divisors is an integer number (165265581323868).

Almost surely, 2^{661060226263331} is an apocalyptic number.

661060226263331 is a deficient number, since it is larger than the sum of its proper divisors (2099032141).

661060226263331 is a wasteful number, since it uses less digits than its factorization.

661060226263331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099032140.

The product of its (nonzero) digits is 1679616, while the sum is 47.

The spelling of 661060226263331 in words is "six hundred sixty-one trillion, sixty billion, two hundred twenty-six million, two hundred sixty-three thousand, three hundred thirty-one".