61351792171 has 4 divisors (see below), whose sum is σ = 61352779752. Its totient is φ = 61350804592.

The previous prime is 61351792153. The next prime is 61351792181. The reversal of 61351792171 is 17129715316.

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

It is a cyclic number.

It is not a de Polignac number, because 61351792171 - 2¹⁷ = 61351661099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61351792181) 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 3 ways as a sum of consecutive naturals, for example, 393865 + ... + 527098.

It is an arithmetic number, because the mean of its divisors is an integer number (15338194938).

Almost surely, 2^61351792171 is an apocalyptic number.

61351792171 is a deficient number, since it is larger than the sum of its proper divisors (987581).

61351792171 is an equidigital number, since it uses as much as digits as its factorization.

61351792171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987580.

The product of its digits is 79380, while the sum is 43.

The spelling of 61351792171 in words is "sixty-one billion, three hundred fifty-one million, seven hundred ninety-two thousand, one hundred seventy-one".