61685441034 has 64 divisors (see below), whose sum is σ = 144855703296. Its totient is φ = 17142188544.

The previous prime is 61685441033. The next prime is 61685441057. The reversal of 61685441034 is 43014458616.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61685441033) 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 31 ways as a sum of consecutive naturals, for example, 6548512 + ... + 6557924.

It is an arithmetic number, because the mean of its divisors is an integer number (2263370364).

Almost surely, 2^61685441034 is an apocalyptic number.

61685441034 is an abundant number, since it is smaller than the sum of its proper divisors (83170262262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61685441034 is a wasteful number, since it uses less digits than its factorization.

61685441034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13679.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 61685441034 in words is "sixty-one billion, six hundred eighty-five million, four hundred forty-one thousand, thirty-four".