61708628652 has 48 divisors (see below), whose sum is σ = 157148232192. Its totient is φ = 18691046080.

The previous prime is 61708628629. The next prime is 61708628671. The reversal of 61708628652 is 25682680716.

It is a happy number.

It is a super-2 number, since 2×61708628652² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61708628595 and 61708628604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186493 + ... + 397739.

It is an arithmetic number, because the mean of its divisors is an integer number (3273921504).

Almost surely, 2^61708628652 is an apocalyptic number.

It is an amenable number.

61708628652 is an abundant number, since it is smaller than the sum of its proper divisors (95439603540).

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

61708628652 is a wasteful number, since it uses less digits than its factorization.

61708628652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213478 (or 213476 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 61708628652 in words is "sixty-one billion, seven hundred eight million, six hundred twenty-eight thousand, six hundred fifty-two".