78216325554150 has 384 divisors, whose sum is σ = 255684212305920. Its totient is φ = 17210781504000.

The previous prime is 78216325554137. The next prime is 78216325554151. The reversal of 78216325554150 is 5145552361287.

78216325554150 is a `hidden beast` number, since 7 + 8 + 2 + 1 + 6 + 32 + 5 + 554 + 1 + 50 = 666.

It is a super-2 number, since 2×78216325554150² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78216325554151) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 25649680 + ... + 28536620.

It is an arithmetic number, because the mean of its divisors is an integer number (665844302880).

Almost surely, 2^{78216325554150} is an apocalyptic number.

78216325554150 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 78216325554150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127842106152960).

78216325554150 is an abundant number, since it is smaller than the sum of its proper divisors (177467886751770).

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

78216325554150 is a wasteful number, since it uses less digits than its factorization.

78216325554150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887077 (or 2887066 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 78216325554150 in words is "seventy-eight trillion, two hundred sixteen billion, three hundred twenty-five million, five hundred fifty-four thousand, one hundred fifty".