78152536536015 has 16 divisors (see below), whose sum is σ = 125046144000000. Its totient is φ = 41680657638432.

The previous prime is 78152536535971. The next prime is 78152536536079. The reversal of 78152536536015 is 51063563525187.

It is not a de Polignac number, because 78152536536015 - 2¹⁶ = 78152536470479 is a prime.

It is a super-2 number, since 2×78152536536015² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42518815 + ... + 44318784.

It is an arithmetic number, because the mean of its divisors is an integer number (7815384000000).

Almost surely, 2^{78152536536015} is an apocalyptic number.

78152536536015 is a deficient number, since it is larger than the sum of its proper divisors (46893607463985).

78152536536015 is a wasteful number, since it uses less digits than its factorization.

78152536536015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86897606.

The product of its (nonzero) digits is 22680000, while the sum is 57.

The spelling of 78152536536015 in words is "seventy-eight trillion, one hundred fifty-two billion, five hundred thirty-six million, five hundred thirty-six thousand, fifteen".