61672661184 has 56 divisors (see below), whose sum is σ = 171763781440. Its totient is φ = 19475576064.

The previous prime is 61672661147. The next prime is 61672661221. The reversal of 61672661184 is 48116627616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61672661147) and next prime (61672661221).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 8449294 + ... + 8456589.

Almost surely, 2^61672661184 is an apocalyptic number.

61672661184 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61672661184 is an abundant number, since it is smaller than the sum of its proper divisors (110091120256).

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

61672661184 is a wasteful number, since it uses less digits than its factorization.

61672661184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16905917 (or 16905907 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The spelling of 61672661184 in words is "sixty-one billion, six hundred seventy-two million, six hundred sixty-one thousand, one hundred eighty-four".