73432623437 has 12 divisors (see below), whose sum is σ = 74326693140. Its totient is φ = 72548669952.

The previous prime is 73432623431. The next prime is 73432623491.

73432623437 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 2896700041 + 70535923396 = 53821^2 + 265586^2 .

It is not a de Polignac number, because 73432623437 - 2²² = 73428429133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73432623431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4185239 + ... + 4202747.

It is an arithmetic number, because the mean of its divisors is an integer number (6193891095).

Almost surely, 2^73432623437 is an apocalyptic number.

It is an amenable number.

73432623437 is a deficient number, since it is larger than the sum of its proper divisors (894069703).

73432623437 is a wasteful number, since it uses less digits than its factorization.

73432623437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18080 (or 17971 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 44.

The spelling of 73432623437 in words is "seventy-three billion, four hundred thirty-two million, six hundred twenty-three thousand, four hundred thirty-seven".