61707680253 has 24 divisors (see below), whose sum is σ = 92572142208. Its totient is φ = 41077217664.

The previous prime is 61707680219. The next prime is 61707680267. The reversal of 61707680253 is 35208670716.

61707680253 is a `hidden beast` number, since 617 + 0 + 7 + 6 + 8 + 0 + 25 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-61707680253 is a prime.

It is a super-2 number, since 2×61707680253² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61707680199 and 61707680208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61707680213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25125 + ... + 352202.

It is an arithmetic number, because the mean of its divisors is an integer number (3857172592).

Almost surely, 2^61707680253 is an apocalyptic number.

It is an amenable number.

61707680253 is a deficient number, since it is larger than the sum of its proper divisors (30864461955).

61707680253 is an equidigital number, since it uses as much as digits as its factorization.

61707680253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378015 (or 378003 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 61707680253 in words is "sixty-one billion, seven hundred seven million, six hundred eighty thousand, two hundred fifty-three".