61288397265 has 16 divisors (see below), whose sum is σ = 98095471488. Its totient is φ = 32675799936.

The previous prime is 61288397257. The next prime is 61288397281. The reversal of 61288397265 is 56279388216.

It is not a de Polignac number, because 61288397265 - 2³ = 61288397257 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 664332 + ... + 750941.

It is an arithmetic number, because the mean of its divisors is an integer number (6130966968).

Almost surely, 2^61288397265 is an apocalyptic number.

It is an amenable number.

61288397265 is a deficient number, since it is larger than the sum of its proper divisors (36807074223).

61288397265 is a wasteful number, since it uses less digits than its factorization.

61288397265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418168.

The product of its digits is 8709120, while the sum is 57.

The spelling of 61288397265 in words is "sixty-one billion, two hundred eighty-eight million, three hundred ninety-seven thousand, two hundred sixty-five".