78472998271 has 8 divisors (see below), whose sum is σ = 81008244224. Its totient is φ = 75937993560.

The previous prime is 78472998269. The next prime is 78472998281. The reversal of 78472998271 is 17289927487.

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 78472998271 - 2¹ = 78472998269 is a prime.

It is a super-2 number, since 2×78472998271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78472998211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792316 + ... + 885838.

It is an arithmetic number, because the mean of its divisors is an integer number (10126030528).

Almost surely, 2^78472998271 is an apocalyptic number.

78472998271 is a deficient number, since it is larger than the sum of its proper divisors (2535245953).

78472998271 is a wasteful number, since it uses less digits than its factorization.

78472998271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120621.

The product of its digits is 28449792, while the sum is 64.

The spelling of 78472998271 in words is "seventy-eight billion, four hundred seventy-two million, nine hundred ninety-eight thousand, two hundred seventy-one".