61174503945 has 24 divisors (see below), whose sum is σ = 109456319232. Its totient is φ = 31573936800.

The previous prime is 61174503913. The next prime is 61174503959. The reversal of 61174503945 is 54930547116.

It is not a de Polignac number, because 61174503945 - 2⁵ = 61174503913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61174503945.

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 23 ways as a sum of consecutive naturals, for example, 21924951 + ... + 21927740.

It is an arithmetic number, because the mean of its divisors is an integer number (4560679968).

Almost surely, 2^61174503945 is an apocalyptic number.

It is an amenable number.

61174503945 is a deficient number, since it is larger than the sum of its proper divisors (48281815287).

61174503945 is a wasteful number, since it uses less digits than its factorization.

61174503945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43852733 (or 43852730 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 61174503945 in words is "sixty-one billion, one hundred seventy-four million, five hundred three thousand, nine hundred forty-five".