30726603401 has 4 divisors (see below), whose sum is σ = 33090188292. Its totient is φ = 28363018512.

The previous prime is 30726603389. The next prime is 30726603409. The reversal of 30726603401 is 10430662703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10430662703 = 107 ⋅97482829.

It can be written as a sum of positive squares in 2 ways, for example, as 18736134400 + 11990469001 = 136880^2 + 109501^2 .

It is a cyclic number.

It is not a de Polignac number, because 30726603401 - 2³⁰ = 29652861577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30726603409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181792426 + ... + 1181792451.

It is an arithmetic number, because the mean of its divisors is an integer number (8272547073).

Almost surely, 2^30726603401 is an apocalyptic number.

It is an amenable number.

30726603401 is a deficient number, since it is larger than the sum of its proper divisors (2363584891).

30726603401 is a wasteful number, since it uses less digits than its factorization.

30726603401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363584890.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 30726603401 in words is "thirty billion, seven hundred twenty-six million, six hundred three thousand, four hundred one".