61613167331 has 8 divisors (see below), whose sum is σ = 62535384000. Its totient is φ = 60696060480.

The previous prime is 61613167327. The next prime is 61613167379. The reversal of 61613167331 is 13376131616.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61613167331 - 2² = 61613167327 is a prime.

It is a super-2 number, since 2×61613167331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61613164331) 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 7 ways as a sum of consecutive naturals, for example, 1253156 + ... + 1301393.

It is an arithmetic number, because the mean of its divisors is an integer number (7816923000).

Almost surely, 2^61613167331 is an apocalyptic number.

61613167331 is a deficient number, since it is larger than the sum of its proper divisors (922216669).

61613167331 is a wasteful number, since it uses less digits than its factorization.

61613167331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554909.

The product of its digits is 40824, while the sum is 38.

Adding to 61613167331 its reverse (13376131616), we get a palindrome (74989298947).

The spelling of 61613167331 in words is "sixty-one billion, six hundred thirteen million, one hundred sixty-seven thousand, three hundred thirty-one".