78299084500 has 288 divisors, whose sum is σ = 226843527456. Its totient is φ = 23321088000.

The previous prime is 78299084491. The next prime is 78299084503. The reversal of 78299084500 is 548099287.

It can be written as a sum of positive squares in 16 ways, for example, as 73720938256 + 4578146244 = 271516^2 + 67662^2 .

It is a super-2 number, since 2×78299084500² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78299084503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5407270 + ... + 5421730.

It is an arithmetic number, because the mean of its divisors is an integer number (787651137).

Almost surely, 2^78299084500 is an apocalyptic number.

78299084500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78299084500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113421763728).

78299084500 is an abundant number, since it is smaller than the sum of its proper divisors (148544442956).

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

78299084500 is a wasteful number, since it uses less digits than its factorization.

78299084500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14524 (or 14505 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 78299084500 in words is "seventy-eight billion, two hundred ninety-nine million, eighty-four thousand, five hundred".