61010722757 has 4 divisors (see below), whose sum is σ = 61449648960. Its totient is φ = 60571796556.

The previous prime is 61010722741. The next prime is 61010722919. The reversal of 61010722757 is 75722701016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61010722757 - 2⁴ = 61010722741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61010722757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61010722727) 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, 219462893 + ... + 219463170.

It is an arithmetic number, because the mean of its divisors is an integer number (15362412240).

Almost surely, 2^61010722757 is an apocalyptic number.

It is an amenable number.

61010722757 is a deficient number, since it is larger than the sum of its proper divisors (438926203).

61010722757 is a wasteful number, since it uses less digits than its factorization.

61010722757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438926202.

The product of its (nonzero) digits is 41160, while the sum is 38.

The spelling of 61010722757 in words is "sixty-one billion, ten million, seven hundred twenty-two thousand, seven hundred fifty-seven".