61551512035 has 16 divisors (see below), whose sum is σ = 83729993760. Its totient is φ = 43061137920.

The previous prime is 61551512021. The next prime is 61551512069. The reversal of 61551512035 is 53021515516.

It is not a de Polignac number, because 61551512035 - 2⁹ = 61551511523 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, 24918406 + ... + 24920875.

It is an arithmetic number, because the mean of its divisors is an integer number (5233124610).

Almost surely, 2^61551512035 is an apocalyptic number.

61551512035 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61551512035 is a deficient number, since it is larger than the sum of its proper divisors (22178481725).

61551512035 is a wasteful number, since it uses less digits than its factorization.

61551512035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49839318.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 61551512035 in words is "sixty-one billion, five hundred fifty-one million, five hundred twelve thousand, thirty-five".