61913210976 has 384 divisors, whose sum is σ = 189292723200. Its totient is φ = 19674869760.

The previous prime is 61913210899. The next prime is 61913210981. The reversal of 61913210976 is 67901231916.

61913210976 is a `hidden beast` number, since 619 + 1 + 3 + 21 + 0 + 9 + 7 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 445418715 + ... + 445418853.

It is an arithmetic number, because the mean of its divisors is an integer number (492949800).

Almost surely, 2^61913210976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61913210976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94646361600).

61913210976 is an abundant number, since it is smaller than the sum of its proper divisors (127379512224).

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

61913210976 is a wasteful number, since it uses less digits than its factorization.

61913210976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 61913210976 in words is "sixty-one billion, nine hundred thirteen million, two hundred ten thousand, nine hundred seventy-six".