61900063884 has 36 divisors (see below), whose sum is σ = 156561964104. Its totient is φ = 20621175552.

The previous prime is 61900063871. The next prime is 61900063889. The reversal of 61900063884 is 48836000916.

61900063884 is a `hidden beast` number, since 6 + 1 + 9 + 0 + 0 + 0 + 638 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (61900063889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445522 + ... + 567705.

Almost surely, 2^61900063884 is an apocalyptic number.

It is an amenable number.

61900063884 is an abundant number, since it is smaller than the sum of its proper divisors (94661900220).

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

61900063884 is a wasteful number, since it uses less digits than its factorization.

61900063884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014934 (or 1014929 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 61900063884 in words is "sixty-one billion, nine hundred million, sixty-three thousand, eight hundred eighty-four".