731649513151 has 4 divisors (see below), whose sum is σ = 748664618152. Its totient is φ = 714634408152.

The previous prime is 731649513139. The next prime is 731649513167. The reversal of 731649513151 is 151315946137.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731649513151 is a prime.

It is a super-2 number, since 2×731649513151² (a number of 25 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 (731049513151) 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, 8507552436 + ... + 8507552521.

It is an arithmetic number, because the mean of its divisors is an integer number (187166154538).

Almost surely, 2^731649513151 is an apocalyptic number.

731649513151 is a deficient number, since it is larger than the sum of its proper divisors (17015105001).

731649513151 is a wasteful number, since it uses less digits than its factorization.

731649513151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17015105000.

The product of its digits is 340200, while the sum is 46.

The spelling of 731649513151 in words is "seven hundred thirty-one billion, six hundred forty-nine million, five hundred thirteen thousand, one hundred fifty-one".