73984648937 has 4 divisors (see below), whose sum is σ = 73985208900. Its totient is φ = 73984088976.

The previous prime is 73984648909. The next prime is 73984648951.

73984648937 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 64955658496 + 9028990441 = 254864^2 + 95021^2 .

It is a cyclic number.

It is not a de Polignac number, because 73984648937 - 2¹² = 73984644841 is a prime.

It is a super-2 number, since 2×73984648937² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73984648337) 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, 40439 + ... + 386787.

It is an arithmetic number, because the mean of its divisors is an integer number (18496302225).

Almost surely, 2^73984648937 is an apocalyptic number.

It is an amenable number.

73984648937 is a deficient number, since it is larger than the sum of its proper divisors (559963).

73984648937 is a wasteful number, since it uses less digits than its factorization.

73984648937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559962.

The product of its digits is 219469824, while the sum is 68.

The spelling of 73984648937 in words is "seventy-three billion, nine hundred eighty-four million, six hundred forty-eight thousand, nine hundred thirty-seven".