61711154117 has 4 divisors (see below), whose sum is σ = 63146297280. Its totient is φ = 60276010956.

The previous prime is 61711154107. The next prime is 61711154171. The reversal of 61711154117 is 71145111716.

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 61711154117 - 2²⁴ = 61694376901 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 (61711154107) 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, 717571517 + ... + 717571602.

It is an arithmetic number, because the mean of its divisors is an integer number (15786574320).

Almost surely, 2^61711154117 is an apocalyptic number.

It is an amenable number.

61711154117 is a deficient number, since it is larger than the sum of its proper divisors (1435143163).

61711154117 is a wasteful number, since it uses less digits than its factorization.

61711154117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435143162.

The product of its digits is 5880, while the sum is 35.

The spelling of 61711154117 in words is "sixty-one billion, seven hundred eleven million, one hundred fifty-four thousand, one hundred seventeen".