78389643150 has 288 divisors, whose sum is σ = 259615050240. Its totient is φ = 16513424640.

The previous prime is 78389643107. The next prime is 78389643173. The reversal of 78389643150 is 5134698387.

78389643150 is a `hidden beast` number, since 7 + 83 + 89 + 6 + 431 + 50 = 666.

It is a super-2 number, since 2×78389643150² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 37632009 + ... + 37634091.

Almost surely, 2^78389643150 is an apocalyptic number.

78389643150 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 78389643150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129807525120).

78389643150 is an abundant number, since it is smaller than the sum of its proper divisors (181225407090).

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

78389643150 is a wasteful number, since it uses less digits than its factorization.

78389643150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 78389643150 in words is "seventy-eight billion, three hundred eighty-nine million, six hundred forty-three thousand, one hundred fifty".