731947749137 has 16 divisors (see below), whose sum is σ = 803934821760. Its totient is φ = 660870144000.

The previous prime is 731947749107. The next prime is 731947749161.

731947749137 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 731947749137 - 2¹² = 731947745041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731947749137.

It is not an unprimeable number, because it can be changed into a prime (731947749107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8950289 + ... + 9031697.

It is an arithmetic number, because the mean of its divisors is an integer number (50245926360).

Almost surely, 2^731947749137 is an apocalyptic number.

It is an amenable number.

731947749137 is a deficient number, since it is larger than the sum of its proper divisors (71987072623).

731947749137 is a wasteful number, since it uses less digits than its factorization.

731947749137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86984.

The product of its digits is 28005264, while the sum is 62.

The spelling of 731947749137 in words is "seven hundred thirty-one billion, nine hundred forty-seven million, seven hundred forty-nine thousand, one hundred thirty-seven".