61005400003 has 4 divisors (see below), whose sum is σ = 61841090488. Its totient is φ = 60169709520.

The previous prime is 61005399971. The next prime is 61005400009. The reversal of 61005400003 is 30000450016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61005400003 - 2⁵ = 61005399971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61005400009) 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, 417845133 + ... + 417845278.

It is an arithmetic number, because the mean of its divisors is an integer number (15460272622).

Almost surely, 2^61005400003 is an apocalyptic number.

61005400003 is a deficient number, since it is larger than the sum of its proper divisors (835690485).

61005400003 is an equidigital number, since it uses as much as digits as its factorization.

61005400003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835690484.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 61005400003 its reverse (30000450016), we get a palindrome (91005850019).

The spelling of 61005400003 in words is "sixty-one billion, five million, four hundred thousand, three".