73401366901 has 4 divisors (see below), whose sum is σ = 73403500204. Its totient is φ = 73399233600.

The previous prime is 73401366877. The next prime is 73401366923. The reversal of 73401366901 is 10966310437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10966310437 = 26083 ⋅420439.

It can be written as a sum of positive squares in 2 ways, for example, as 34345726276 + 39055640625 = 185326^2 + 197625^2 .

It is a cyclic number.

It is not a de Polignac number, because 73401366901 - 2¹⁷ = 73401235829 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 (73401366601) 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, 1014180 + ... + 1084141.

It is an arithmetic number, because the mean of its divisors is an integer number (18350875051).

Almost surely, 2^73401366901 is an apocalyptic number.

It is an amenable number.

73401366901 is a deficient number, since it is larger than the sum of its proper divisors (2133303).

73401366901 is a wasteful number, since it uses less digits than its factorization.

73401366901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133302.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 73401366901 in words is "seventy-three billion, four hundred one million, three hundred sixty-six thousand, nine hundred one".