78152307566157 has 48 divisors (see below), whose sum is σ = 128220804968256. Its totient is φ = 45452252448000.

The previous prime is 78152307566141. The next prime is 78152307566213. The reversal of 78152307566157 is 75166570325187.

78152307566157 is a `hidden beast` number, since 7 + 8 + 1 + 5 + 2 + 3 + 0 + 7 + 5 + 6 + 615 + 7 = 666.

It is not a de Polignac number, because 78152307566157 - 2⁴ = 78152307566141 is a prime.

It is a super-2 number, since 2×78152307566157² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78152307566094 and 78152307566103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78152307566117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157572723 + ... + 158067920.

It is an arithmetic number, because the mean of its divisors is an integer number (2671266770172).

Almost surely, 2^{78152307566157} is an apocalyptic number.

It is an amenable number.

78152307566157 is a deficient number, since it is larger than the sum of its proper divisors (50068497402099).

78152307566157 is a wasteful number, since it uses less digits than its factorization.

78152307566157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315640762 (or 315640759 counting only the distinct ones).

The product of its (nonzero) digits is 74088000, while the sum is 63.

The spelling of 78152307566157 in words is "seventy-eight trillion, one hundred fifty-two billion, three hundred seven million, five hundred sixty-six thousand, one hundred fifty-seven".