78134820329602 has 8 divisors (see below), whose sum is σ = 117385073289612. Its totient is φ = 39006462566400.

The previous prime is 78134820329561. The next prime is 78134820329627. The reversal of 78134820329602 is 20692302843187.

It can be written as a sum of positive squares in 2 ways, for example, as 78100540177401 + 34280152201 = 8837451^2 + 185149^2 .

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

It is a super-2 number, since 2×78134820329602² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30473797599 + ... + 30473800162.

Almost surely, 2^{78134820329602} is an apocalyptic number.

78134820329602 is a deficient number, since it is larger than the sum of its proper divisors (39250252960010).

78134820329602 is a wasteful number, since it uses less digits than its factorization.

78134820329602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60947598404.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 78134820329602 in words is "seventy-eight trillion, one hundred thirty-four billion, eight hundred twenty million, three hundred twenty-nine thousand, six hundred two".