61674124919 has 4 divisors (see below), whose sum is σ = 67280863560. Its totient is φ = 56067386280.

The previous prime is 61674124907. The next prime is 61674124943. The reversal of 61674124919 is 91942147616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61674124919 is a prime.

It is a super-2 number, since 2×61674124919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61674124949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2803369304 + ... + 2803369325.

It is an arithmetic number, because the mean of its divisors is an integer number (16820215890).

Almost surely, 2^61674124919 is an apocalyptic number.

61674124919 is a deficient number, since it is larger than the sum of its proper divisors (5606738641).

61674124919 is a wasteful number, since it uses less digits than its factorization.

61674124919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606738640.

The product of its digits is 653184, while the sum is 50.

The spelling of 61674124919 in words is "sixty-one billion, six hundred seventy-four million, one hundred twenty-four thousand, nine hundred nineteen".