61275515005 has 8 divisors (see below), whose sum is σ = 73579290624. Its totient is φ = 48987963600.

The previous prime is 61275514999. The next prime is 61275515047. The reversal of 61275515005 is 50051557216.

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

It is not a de Polignac number, because 61275515005 - 2¹⁹ = 61274990717 is a prime.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4047741 + ... + 4062850.

It is an arithmetic number, because the mean of its divisors is an integer number (9197411328).

Almost surely, 2^61275515005 is an apocalyptic number.

It is an amenable number.

61275515005 is a deficient number, since it is larger than the sum of its proper divisors (12303775619).

61275515005 is a wasteful number, since it uses less digits than its factorization.

61275515005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8112107.

The product of its (nonzero) digits is 52500, while the sum is 37.

It can be divided in two parts, 612755 and 15005, that added together give a triangular number (627760 = T₁₁₂₀).

The spelling of 61275515005 in words is "sixty-one billion, two hundred seventy-five million, five hundred fifteen thousand, five".