61858476852 has 24 divisors (see below), whose sum is σ = 151933101600. Its totient is φ = 19534255776.

The previous prime is 61858476787. The next prime is 61858476853. The reversal of 61858476852 is 25867485816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61858476853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135654327 + ... + 135654782.

It is an arithmetic number, because the mean of its divisors is an integer number (6330545900).

Almost surely, 2^61858476852 is an apocalyptic number.

It is an amenable number.

61858476852 is an abundant number, since it is smaller than the sum of its proper divisors (90074624748).

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

61858476852 is a wasteful number, since it uses less digits than its factorization.

61858476852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271309135 (or 271309133 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 60.

The spelling of 61858476852 in words is "sixty-one billion, eight hundred fifty-eight million, four hundred seventy-six thousand, eight hundred fifty-two".