73579231493 has 2 divisors, whose sum is σ = 73579231494. Its totient is φ = 73579231492.

The previous prime is 73579231477. The next prime is 73579231577. The reversal of 73579231493 is 39413297537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62251248004 + 11327983489 = 249502^2 + 106433^2 .

It is a cyclic number.

It is not a de Polignac number, because 73579231493 - 2⁴ = 73579231477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73579234493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36789615746 + 36789615747.

It is an arithmetic number, because the mean of its divisors is an integer number (36789615747).

Almost surely, 2^73579231493 is an apocalyptic number.

It is an amenable number.

73579231493 is a deficient number, since it is larger than the sum of its proper divisors (1).

73579231493 is an equidigital number, since it uses as much as digits as its factorization.

73579231493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 53.

The spelling of 73579231493 in words is "seventy-three billion, five hundred seventy-nine million, two hundred thirty-one thousand, four hundred ninety-three".