61005400005 has 16 divisors (see below), whose sum is σ = 106482153024. Its totient is φ = 29578375680.

The previous prime is 61005399971. The next prime is 61005400009. The reversal of 61005400005 is 50000450016.

It is a happy number.

It is not a de Polignac number, because 61005400005 - 2¹³ = 61005391813 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 184864684 + ... + 184865013.

It is an arithmetic number, because the mean of its divisors is an integer number (6655134564).

Almost surely, 2^61005400005 is an apocalyptic number.

It is an amenable number.

61005400005 is a deficient number, since it is larger than the sum of its proper divisors (45476753019).

61005400005 is a wasteful number, since it uses less digits than its factorization.

61005400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369729716.

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 61005400005 in words is "sixty-one billion, five million, four hundred thousand, five".