736506766321 has 4 divisors (see below), whose sum is σ = 736801018432. Its totient is φ = 736212514212.

The previous prime is 736506766313. The next prime is 736506766343. The reversal of 736506766321 is 123667605637.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123667605637 = 23 ⋅5376852419.

It is a cyclic number.

It is not a de Polignac number, because 736506766321 - 2³ = 736506766313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (736506766351) 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, 147122301 + ... + 147127306.

It is an arithmetic number, because the mean of its divisors is an integer number (184200254608).

Almost surely, 2^736506766321 is an apocalyptic number.

It is an amenable number.

736506766321 is a deficient number, since it is larger than the sum of its proper divisors (294252111).

736506766321 is a wasteful number, since it uses less digits than its factorization.

736506766321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294252110.

The product of its (nonzero) digits is 5715360, while the sum is 52.

The spelling of 736506766321 in words is "seven hundred thirty-six billion, five hundred six million, seven hundred sixty-six thousand, three hundred twenty-one".