78542031145 has 8 divisors (see below), whose sum is σ = 94557443904. Its totient is φ = 62628953904.

The previous prime is 78542031131. The next prime is 78542031151. The reversal of 78542031145 is 54113024587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78542031145 - 2¹³ = 78542022953 is a prime.

It is a super-2 number, since 2×78542031145² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78542031098 and 78542031107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25582189 + ... + 25585258.

It is an arithmetic number, because the mean of its divisors is an integer number (11819680488).

Almost surely, 2^78542031145 is an apocalyptic number.

It is an amenable number.

78542031145 is a deficient number, since it is larger than the sum of its proper divisors (16015412759).

78542031145 is a wasteful number, since it uses less digits than its factorization.

78542031145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51167759.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 78542031145 in words is "seventy-eight billion, five hundred forty-two million, thirty-one thousand, one hundred forty-five".