61212284761 has 8 divisors (see below), whose sum is σ = 66903750144. Its totient is φ = 55753124160.

The previous prime is 61212284759. The next prime is 61212284773. The reversal of 61212284761 is 16748221216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61212284761 - 2¹ = 61212284759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61212284741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58075645 + ... + 58076698.

It is an arithmetic number, because the mean of its divisors is an integer number (8362968768).

Almost surely, 2^61212284761 is an apocalyptic number.

It is an amenable number.

61212284761 is a deficient number, since it is larger than the sum of its proper divisors (5691465383).

61212284761 is a wasteful number, since it uses less digits than its factorization.

61212284761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116152391.

The product of its digits is 64512, while the sum is 40.

The spelling of 61212284761 in words is "sixty-one billion, two hundred twelve million, two hundred eighty-four thousand, seven hundred sixty-one".