78080953 has 4 divisors (see below), whose sum is σ = 78250788. Its totient is φ = 77911120.

The previous prime is 78080939. The next prime is 78081001. The reversal of 78080953 is 35908087.

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 22771984 + 55308969 = 4772^2 + 7437^2 .

It is a cyclic number.

It is not a de Polignac number, because 78080953 - 2⁵ = 78080921 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78080153) 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, 84226 + ... + 85147.

It is an arithmetic number, because the mean of its divisors is an integer number (19562697).

Almost surely, 2^78080953 is an apocalyptic number.

It is an amenable number.

78080953 is a deficient number, since it is larger than the sum of its proper divisors (169835).

78080953 is a wasteful number, since it uses less digits than its factorization.

78080953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169834.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 78080953 is about 8836.3427389390. The cubic root of 78080953 is about 427.4136309678.

The spelling of 78080953 in words is "seventy-eight million, eighty thousand, nine hundred fifty-three".