61846492640 has 192 divisors, whose sum is σ = 158221486080. Its totient is φ = 22768128000.

The previous prime is 61846492637. The next prime is 61846492651. The reversal of 61846492640 is 4629464816.

61846492640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33776525 + ... + 33778355.

It is an arithmetic number, because the mean of its divisors is an integer number (824070240).

Almost surely, 2^61846492640 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 61846492640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79110743040).

61846492640 is an abundant number, since it is smaller than the sum of its proper divisors (96374993440).

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

61846492640 is a wasteful number, since it uses less digits than its factorization.

61846492640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 61846492640 in words is "sixty-one billion, eight hundred forty-six million, four hundred ninety-two thousand, six hundred forty".