61317117229290 has 64 divisors (see below), whose sum is σ = 158483407856256. Its totient is φ = 15093230591232.

The previous prime is 61317117229289. The next prime is 61317117229391. The reversal of 61317117229290 is 9292271171316.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27410532 + ... + 29563008.

It is an arithmetic number, because the mean of its divisors is an integer number (2476303247754).

Almost surely, 2^{61317117229290} is an apocalyptic number.

61317117229290 is an abundant number, since it is smaller than the sum of its proper divisors (97166290626966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61317117229290 is a wasteful number, since it uses less digits than its factorization.

61317117229290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225543.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 61317117229290 in words is "sixty-one trillion, three hundred seventeen billion, one hundred seventeen million, two hundred twenty-nine thousand, two hundred ninety".