78151700338042 has 8 divisors (see below), whose sum is σ = 118365682065696. Its totient is φ = 38696472982812.

The previous prime is 78151700338027. The next prime is 78151700338043. The reversal of 78151700338042 is 24083300715187.

It is a happy number.

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

It is a super-2 number, since 2×78151700338042² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78151700338043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189688592848 + ... + 189688593259.

It is an arithmetic number, because the mean of its divisors is an integer number (14795710258212).

Almost surely, 2^{78151700338042} is an apocalyptic number.

78151700338042 is a deficient number, since it is larger than the sum of its proper divisors (40213981727654).

78151700338042 is a wasteful number, since it uses less digits than its factorization.

78151700338042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379377186212.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 78151700338042 in words is "seventy-eight trillion, one hundred fifty-one billion, seven hundred million, three hundred thirty-eight thousand, forty-two".