61994389248 has 432 divisors, whose sum is σ = 211929768960. Its totient is φ = 17219174400.

The previous prime is 61994389199. The next prime is 61994389297. The reversal of 61994389248 is 84298349916.

61994389248 is a `hidden beast` number, since 6 + 1 + 9 + 9 + 4 + 389 + 248 = 666.

61994389248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61994389199) and next prime (61994389297).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14925540 + ... + 14929692.

Almost surely, 2^61994389248 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 61994389248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105964884480).

61994389248 is an abundant number, since it is smaller than the sum of its proper divisors (149935379712).

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

61994389248 is a wasteful number, since it uses less digits than its factorization.

61994389248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236 (or 4219 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 61994389248 in words is "sixty-one billion, nine hundred ninety-four million, three hundred eighty-nine thousand, two hundred forty-eight".