78494301522 has 96 divisors (see below), whose sum is σ = 210846609792. Its totient is φ = 20550627072.

The previous prime is 78494301511. The next prime is 78494301547. The reversal of 78494301522 is 22510349487.

78494301522 is a `hidden beast` number, since 7 + 8 + 4 + 94 + 30 + 1 + 522 = 666.

It is a super-2 number, since 2×78494301522² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49513 + ... + 399299.

It is an arithmetic number, because the mean of its divisors is an integer number (2196318852).

Almost surely, 2^78494301522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78494301522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105423304896).

78494301522 is an abundant number, since it is smaller than the sum of its proper divisors (132352308270).

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

78494301522 is a wasteful number, since it uses less digits than its factorization.

78494301522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349952 (or 349949 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 78494301522 in words is "seventy-eight billion, four hundred ninety-four million, three hundred one thousand, five hundred twenty-two".