736397221471 has 4 divisors (see below), whose sum is σ = 736546566744. Its totient is φ = 736247876200.

The previous prime is 736397221457. The next prime is 736397221493. The reversal of 736397221471 is 174122793637.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 736397221471 - 2¹⁷ = 736397090399 is a prime.

It is a super-3 number, since 3×736397221471³ (a number of 37 digits) contains 333 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 (736397221451) 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, 74665240 + ... + 74675101.

It is an arithmetic number, because the mean of its divisors is an integer number (184136641686).

Almost surely, 2^736397221471 is an apocalyptic number.

736397221471 is a deficient number, since it is larger than the sum of its proper divisors (149345273).

736397221471 is a wasteful number, since it uses less digits than its factorization.

736397221471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149345272.

The product of its digits is 2667168, while the sum is 52.

The spelling of 736397221471 in words is "seven hundred thirty-six billion, three hundred ninety-seven million, two hundred twenty-one thousand, four hundred seventy-one".