78129501305151 has 8 divisors (see below), whose sum is σ = 104451951701680. Its totient is φ = 51946692556032.

The previous prime is 78129501305071. The next prime is 78129501305161. The reversal of 78129501305151 is 15150310592187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78129501305151 - 2³³ = 78120911370559 is a prime.

It is a super-2 number, since 2×78129501305151² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78129501305151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78129501305161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34910410546 + ... + 34910412783.

It is an arithmetic number, because the mean of its divisors is an integer number (13056493962710).

Almost surely, 2^{78129501305151} is an apocalyptic number.

78129501305151 is a deficient number, since it is larger than the sum of its proper divisors (26322450396529).

78129501305151 is a wasteful number, since it uses less digits than its factorization.

78129501305151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69820823705.

The product of its (nonzero) digits is 378000, while the sum is 48.

The spelling of 78129501305151 in words is "seventy-eight trillion, one hundred twenty-nine billion, five hundred one million, three hundred five thousand, one hundred fifty-one".