61063781004 has 36 divisors (see below), whose sum is σ = 154364148120. Its totient is φ = 20353475520.

The previous prime is 61063780993. The next prime is 61063781017. The reversal of 61063781004 is 40018736016.

61063781004 is a `hidden beast` number, since 6 + 1 + 0 + 637 + 8 + 10 + 0 + 4 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61063781004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858939 + ... + 927309.

Almost surely, 2^61063781004 is an apocalyptic number.

It is an amenable number.

61063781004 is an abundant number, since it is smaller than the sum of its proper divisors (93300367116).

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

61063781004 is a wasteful number, since it uses less digits than its factorization.

61063781004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93190 (or 93185 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 61063781004 in words is "sixty-one billion, sixty-three million, seven hundred eighty-one thousand, four".