61070715911 has 4 divisors (see below), whose sum is σ = 61098314472. Its totient is φ = 61043117352.

The previous prime is 61070715907. The next prime is 61070715917. The reversal of 61070715911 is 11951707016.

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 61070715911 - 2² = 61070715907 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 (61070715917) 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, 13795961 + ... + 13800386.

It is an arithmetic number, because the mean of its divisors is an integer number (15274578618).

Almost surely, 2^61070715911 is an apocalyptic number.

61070715911 is a deficient number, since it is larger than the sum of its proper divisors (27598561).

61070715911 is a wasteful number, since it uses less digits than its factorization.

61070715911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27598560.

The product of its (nonzero) digits is 13230, while the sum is 38.

The spelling of 61070715911 in words is "sixty-one billion, seventy million, seven hundred fifteen thousand, nine hundred eleven".