61197778295 has 8 divisors (see below), whose sum is σ = 73456105824. Its totient is φ = 48945708064.

The previous prime is 61197778247. The next prime is 61197778361. The reversal of 61197778295 is 59287779116.

It is a happy number.

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 61197778295 - 2¹⁰ = 61197777271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1542779 + ... + 1581948.

It is an arithmetic number, because the mean of its divisors is an integer number (9182013228).

Almost surely, 2^61197778295 is an apocalyptic number.

61197778295 is a deficient number, since it is larger than the sum of its proper divisors (12258327529).

61197778295 is a wasteful number, since it uses less digits than its factorization.

61197778295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128649.

The product of its digits is 13335840, while the sum is 62.

The spelling of 61197778295 in words is "sixty-one billion, one hundred ninety-seven million, seven hundred seventy-eight thousand, two hundred ninety-five".