61552168791 has 16 divisors (see below), whose sum is σ = 84909137760. Its totient is φ = 39615309440.

The previous prime is 61552168781. The next prime is 61552168793. The reversal of 61552168791 is 19786125516.

It is a cyclic number.

It is not a de Polignac number, because 61552168791 - 2¹³ = 61552160599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61552168793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846661 + ... + 916481.

It is an arithmetic number, because the mean of its divisors is an integer number (5306821110).

Almost surely, 2^61552168791 is an apocalyptic number.

61552168791 is a deficient number, since it is larger than the sum of its proper divisors (23356968969).

61552168791 is a wasteful number, since it uses less digits than its factorization.

61552168791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79986.

The product of its digits is 907200, while the sum is 51.

The spelling of 61552168791 in words is "sixty-one billion, five hundred fifty-two million, one hundred sixty-eight thousand, seven hundred ninety-one".