61186858460 has 48 divisors (see below), whose sum is σ = 158144500416. Its totient is φ = 19364631552.

The previous prime is 61186858451. The next prime is 61186858529. The reversal of 61186858460 is 6485868116.

It is a congruent number.

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, 16807757 + ... + 16811396.

It is an arithmetic number, because the mean of its divisors is an integer number (3294677092).

Almost surely, 2^61186858460 is an apocalyptic number.

It is an amenable number.

61186858460 is an abundant number, since it is smaller than the sum of its proper divisors (96957641956).

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

61186858460 is a wasteful number, since it uses less digits than its factorization.

61186858460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33619182 (or 33619180 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 61186858460 in words is "sixty-one billion, one hundred eighty-six million, eight hundred fifty-eight thousand, four hundred sixty".