61020165667 has 4 divisors (see below), whose sum is σ = 61115065480. Its totient is φ = 60925265856.

The previous prime is 61020165649. The next prime is 61020165697. The reversal of 61020165667 is 76656102016.

61020165667 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 61020165667 - 2¹⁹ = 61019641379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61020165697) 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, 47448942 + ... + 47450227.

It is an arithmetic number, because the mean of its divisors is an integer number (15278766370).

Almost surely, 2^61020165667 is an apocalyptic number.

61020165667 is a deficient number, since it is larger than the sum of its proper divisors (94899813).

61020165667 is an equidigital number, since it uses as much as digits as its factorization.

61020165667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94899812.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 61020165667 in words is "sixty-one billion, twenty million, one hundred sixty-five thousand, six hundred sixty-seven".