61351792173 has 28 divisors (see below), whose sum is σ = 105126418848. Its totient is φ = 35058164040.

The previous prime is 61351792153. The next prime is 61351792181. The reversal of 61351792173 is 37129715316.

61351792173 is a `hidden beast` number, since 61 + 3 + 517 + 9 + 2 + 1 + 73 = 666.

It is not a de Polignac number, because 61351792173 - 2¹⁷ = 61351661101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61351792153) 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 27 ways as a sum of consecutive naturals, for example, 6006243 + ... + 6016448.

Almost surely, 2^61351792173 is an apocalyptic number.

61351792173 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61351792173 is a deficient number, since it is larger than the sum of its proper divisors (43774626675).

61351792173 is an equidigital number, since it uses as much as digits as its factorization.

61351792173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12022716 (or 12022701 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The spelling of 61351792173 in words is "sixty-one billion, three hundred fifty-one million, seven hundred ninety-two thousand, one hundred seventy-three".