61020501767 has 4 divisors (see below), whose sum is σ = 61486307256. Its totient is φ = 60554696280.

The previous prime is 61020501749. The next prime is 61020501769. The reversal of 61020501767 is 76710502016.

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 61020501767 - 2²⁰ = 61019453191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61020501769) 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, 232902548 + ... + 232902809.

It is an arithmetic number, because the mean of its divisors is an integer number (15371576814).

Almost surely, 2^61020501767 is an apocalyptic number.

61020501767 is a deficient number, since it is larger than the sum of its proper divisors (465805489).

61020501767 is a wasteful number, since it uses less digits than its factorization.

61020501767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465805488.

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 61020501767 in words is "sixty-one billion, twenty million, five hundred one thousand, seven hundred sixty-seven".