78005042453 has 16 divisors (see below), whose sum is σ = 89827614576. Its totient is φ = 67098086400.

The previous prime is 78005042449. The next prime is 78005042459. The reversal of 78005042453 is 35424050087.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4155349444 + 73849693009 = 64462^2 + 271753^2 .

It is a cyclic number.

It is not a de Polignac number, because 78005042453 - 2² = 78005042449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78005042459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725026 + ... + 1769667.

It is an arithmetic number, because the mean of its divisors is an integer number (5614225911).

Almost surely, 2^78005042453 is an apocalyptic number.

It is an amenable number.

78005042453 is a deficient number, since it is larger than the sum of its proper divisors (11822572123).

78005042453 is a wasteful number, since it uses less digits than its factorization.

78005042453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494824.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 78005042453 in words is "seventy-eight billion, five million, forty-two thousand, four hundred fifty-three".