78153078165 has 16 divisors (see below), whose sum is σ = 125329776000. Its totient is φ = 41586691392.

The previous prime is 78153078149. The next prime is 78153078169. The reversal of 78153078165 is 56187035187.

It is not a de Polignac number, because 78153078165 - 2⁴ = 78153078149 is a prime.

It is a super-2 number, since 2×78153078165² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78153078169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5927590 + ... + 5940759.

It is an arithmetic number, because the mean of its divisors is an integer number (7833111000).

Almost surely, 2^78153078165 is an apocalyptic number.

It is an amenable number.

78153078165 is a deficient number, since it is larger than the sum of its proper divisors (47176697835).

78153078165 is a wasteful number, since it uses less digits than its factorization.

78153078165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868796.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 78153078165 in words is "seventy-eight billion, one hundred fifty-three million, seventy-eight thousand, one hundred sixty-five".