61105117015 has 8 divisors (see below), whose sum is σ = 73358728848. Its totient is φ = 48862368000.

The previous prime is 61105116949. The next prime is 61105117039. The reversal of 61105117015 is 51071150116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61105117015 - 2³¹ = 58957633367 is a prime.

It is a super-3 number, since 3×61105117015³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703322 + ... + 2725831.

It is an arithmetic number, because the mean of its divisors is an integer number (9169841106).

Almost surely, 2^61105117015 is an apocalyptic number.

61105117015 is a deficient number, since it is larger than the sum of its proper divisors (12253611833).

61105117015 is a wasteful number, since it uses less digits than its factorization.

61105117015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431409.

The product of its (nonzero) digits is 1050, while the sum is 28.

The spelling of 61105117015 in words is "sixty-one billion, one hundred five million, one hundred seventeen thousand, fifteen".