61247074317660 has 576 divisors, whose sum is σ = 233600688921600. Its totient is φ = 12618370252800.

The previous prime is 61247074317641. The next prime is 61247074317701. The reversal of 61247074317660 is 6671347074216.

It is a happy number.

61247074317660 is a `hidden beast` number, since 6 + 1 + 2 + 470 + 7 + 43 + 1 + 76 + 60 = 666.

It is a super-2 number, since 2×61247074317660² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61247074317597 and 61247074317606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1481488590 + ... + 1481529930.

It is an arithmetic number, because the mean of its divisors is an integer number (405556751600).

Almost surely, 2^{61247074317660} is an apocalyptic number.

61247074317660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61247074317660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116800344460800).

61247074317660 is an abundant number, since it is smaller than the sum of its proper divisors (172353614603940).

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

61247074317660 is a wasteful number, since it uses less digits than its factorization.

61247074317660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42282 (or 42277 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 61247074317660 in words is "sixty-one trillion, two hundred forty-seven billion, seventy-four million, three hundred seventeen thousand, six hundred sixty".