61172561166634 has 16 divisors (see below), whose sum is σ = 92126237940576. Its totient is φ = 30463820010000.

The previous prime is 61172561166617. The next prime is 61172561166637. The reversal of 61172561166634 is 43666116527116.

It is a super-2 number, since 2×61172561166634² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61172561166637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24741829 + ... + 27101719.

It is an arithmetic number, because the mean of its divisors is an integer number (5757889871286).

Almost surely, 2^{61172561166634} is an apocalyptic number.

61172561166634 is a deficient number, since it is larger than the sum of its proper divisors (30953676773942).

61172561166634 is a wasteful number, since it uses less digits than its factorization.

61172561166634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411781.

The product of its digits is 6531840, while the sum is 55.

The spelling of 61172561166634 in words is "sixty-one trillion, one hundred seventy-two billion, five hundred sixty-one million, one hundred sixty-six thousand, six hundred thirty-four".