61503663105 has 48 divisors (see below), whose sum is σ = 110007129024. Its totient is φ = 31763975040.

The previous prime is 61503663103. The next prime is 61503663139. The reversal of 61503663105 is 50136630516.

61503663105 is a `hidden beast` number, since 6 + 15 + 0 + 3 + 6 + 631 + 0 + 5 = 666.

It is not a de Polignac number, because 61503663105 - 2¹ = 61503663103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61503663105.

It is not an unprimeable number, because it can be changed into a prime (61503663103) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 263782 + ... + 438848.

It is an arithmetic number, because the mean of its divisors is an integer number (2291815188).

Almost surely, 2^61503663105 is an apocalyptic number.

It is an amenable number.

61503663105 is a deficient number, since it is larger than the sum of its proper divisors (48503465919).

61503663105 is a wasteful number, since it uses less digits than its factorization.

61503663105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175326 (or 175323 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 61503663105 in words is "sixty-one billion, five hundred three million, six hundred sixty-three thousand, one hundred five".