61889174534 has 16 divisors (see below), whose sum is σ = 101330058240. Its totient is φ = 28115647560.

The previous prime is 61889174531. The next prime is 61889174537. The reversal of 61889174534 is 43547198816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61889174531) and next prime (61889174537).

It is a self number, because there is not a number n which added to its sum of digits gives 61889174534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61889174531) 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 7 ways as a sum of consecutive naturals, for example, 749654 + ... + 828105.

It is an arithmetic number, because the mean of its divisors is an integer number (6333128640).

Almost surely, 2^61889174534 is an apocalyptic number.

61889174534 is a deficient number, since it is larger than the sum of its proper divisors (39440883706).

61889174534 is a wasteful number, since it uses less digits than its factorization.

61889174534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579555.

The product of its digits is 5806080, while the sum is 56.

The spelling of 61889174534 in words is "sixty-one billion, eight hundred eighty-nine million, one hundred seventy-four thousand, five hundred thirty-four".