78151702548855 has 64 divisors (see below), whose sum is σ = 135129135601152. Its totient is φ = 38341060093440.

The previous prime is 78151702548817. The next prime is 78151702548859. The reversal of 78151702548855 is 55884520715187.

It is not a de Polignac number, because 78151702548855 - 2⁷ = 78151702548727 is a prime.

It is a super-2 number, since 2×78151702548855² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78151702548859) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1314703764 + ... + 1314763206.

It is an arithmetic number, because the mean of its divisors is an integer number (2111392743768).

Almost surely, 2^{78151702548855} is an apocalyptic number.

78151702548855 is a deficient number, since it is larger than the sum of its proper divisors (56977433052297).

78151702548855 is a wasteful number, since it uses less digits than its factorization.

78151702548855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82768.

The product of its (nonzero) digits is 125440000, while the sum is 66.

The spelling of 78151702548855 in words is "seventy-eight trillion, one hundred fifty-one billion, seven hundred two million, five hundred forty-eight thousand, eight hundred fifty-five".