61940463168 has 112 divisors (see below), whose sum is σ = 171479992320. Its totient is φ = 19694805504.

The previous prime is 61940463157. The next prime is 61940463217. The reversal of 61940463168 is 86136404916.

61940463168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1601563 + ... + 1639781.

It is an arithmetic number, because the mean of its divisors is an integer number (1531071360).

Almost surely, 2^61940463168 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 61940463168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85739996160).

61940463168 is an abundant number, since it is smaller than the sum of its proper divisors (109539529152).

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

61940463168 is a wasteful number, since it uses less digits than its factorization.

61940463168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38624 (or 38614 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 61940463168 in words is "sixty-one billion, nine hundred forty million, four hundred sixty-three thousand, one hundred sixty-eight".