61611161210 has 16 divisors (see below), whose sum is σ = 110904743592. Its totient is φ = 24643430400.

The previous prime is 61611161177. The next prime is 61611161231. The reversal of 61611161210 is 1216111616.

It can be written as a sum of positive squares in 4 ways, for example, as 59244046801 + 2367114409 = 243401^2 + 48653^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61611161210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149630 + ... + 381590.

Almost surely, 2^61611161210 is an apocalyptic number.

61611161210 is a deficient number, since it is larger than the sum of its proper divisors (49293582382).

61611161210 is a wasteful number, since it uses less digits than its factorization.

61611161210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258529.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 61611161210 its reverse (1216111616), we get a palindrome (62827272826).

The spelling of 61611161210 in words is "sixty-one billion, six hundred eleven million, one hundred sixty-one thousand, two hundred ten".