78802053157 has 8 divisors (see below), whose sum is σ = 80132507352. Its totient is φ = 77472844800.

The previous prime is 78802053119. The next prime is 78802053167. The reversal of 78802053157 is 75135020887.

It can be written as a sum of positive squares in 4 ways, for example, as 6436211076 + 72365842081 = 80226^2 + 269009^2 .

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 78802053157 - 2¹⁵ = 78802020389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78802053107) 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 7 ways as a sum of consecutive naturals, for example, 183448 + ... + 437329.

It is an arithmetic number, because the mean of its divisors is an integer number (10016563419).

Almost surely, 2^78802053157 is an apocalyptic number.

It is an amenable number.

78802053157 is a deficient number, since it is larger than the sum of its proper divisors (1330454195).

78802053157 is a wasteful number, since it uses less digits than its factorization.

78802053157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622919.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 78802053157 in words is "seventy-eight billion, eight hundred two million, fifty-three thousand, one hundred fifty-seven".