78504110165141 has 4 divisors (see below), whose sum is σ = 78506158795884. Its totient is φ = 78502061534400.

The previous prime is 78504110165119. The next prime is 78504110165347. The reversal of 78504110165141 is 14156101140587.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15171640416241 + 63332469748900 = 3895079^2 + 7958170^2 .

It is a cyclic number.

It is not a de Polignac number, because 78504110165141 - 2⁴² = 74106063654037 is a prime.

It is a super-4 number, since 4×78504110165141⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78504110165092 and 78504110165101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78504110195141) 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, 1024257890 + ... + 1024334531.

It is an arithmetic number, because the mean of its divisors is an integer number (19626539698971).

Almost surely, 2^{78504110165141} is an apocalyptic number.

It is an amenable number.

78504110165141 is a deficient number, since it is larger than the sum of its proper divisors (2048630743).

78504110165141 is a wasteful number, since it uses less digits than its factorization.

78504110165141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048630742.

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 78504110165141 in words is "seventy-eight trillion, five hundred four billion, one hundred ten million, one hundred sixty-five thousand, one hundred forty-one".