78771748650 has 192 divisors, whose sum is σ = 233627713536. Its totient is φ = 17184960000.

The previous prime is 78771748621. The next prime is 78771748711. The reversal of 78771748650 is 5684717787.

It is a super-3 number, since 3×78771748650³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2359575 + ... + 2392725.

It is an arithmetic number, because the mean of its divisors is an integer number (1216811008).

Almost surely, 2^78771748650 is an apocalyptic number.

78771748650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78771748650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116813856768).

78771748650 is an abundant number, since it is smaller than the sum of its proper divisors (154855964886).

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

78771748650 is a wasteful number, since it uses less digits than its factorization.

78771748650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33277 (or 33272 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 60.

The spelling of 78771748650 in words is "seventy-eight billion, seven hundred seventy-one million, seven hundred forty-eight thousand, six hundred fifty".