78129501305152 has 28 divisors (see below), whose sum is σ = 169132613622336. Its totient is φ = 35513409683840.

The previous prime is 78129501305071. The next prime is 78129501305161. The reversal of 78129501305152 is 25150310592187.

It is a super-2 number, since 2×78129501305152² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78129501305096 and 78129501305105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55489701928 + ... + 55489703335.

It is an arithmetic number, because the mean of its divisors is an integer number (6040450486512).

Almost surely, 2^{78129501305152} is an apocalyptic number.

It is an amenable number.

78129501305152 is an abundant number, since it is smaller than the sum of its proper divisors (91003112317184).

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

78129501305152 is a wasteful number, since it uses less digits than its factorization.

78129501305152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110979405286 (or 110979405276 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 49.

The spelling of 78129501305152 in words is "seventy-eight trillion, one hundred twenty-nine billion, five hundred one million, three hundred five thousand, one hundred fifty-two".