61005400052 has 48 divisors (see below), whose sum is σ = 111861488592. Its totient is φ = 29079797760.

The previous prime is 61005400009. The next prime is 61005400091. The reversal of 61005400052 is 25000450016.

61005400052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 15834698896 + 45170701156 = 125836^2 + 212534^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6435188 + ... + 6444660.

It is an arithmetic number, because the mean of its divisors is an integer number (2330447679).

Almost surely, 2^61005400052 is an apocalyptic number.

It is an amenable number.

61005400052 is a deficient number, since it is larger than the sum of its proper divisors (50856088540).

61005400052 is a wasteful number, since it uses less digits than its factorization.

61005400052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10388 (or 10386 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 61005400052 its reverse (25000450016), we get a palindrome (86005850068).

The spelling of 61005400052 in words is "sixty-one billion, five million, four hundred thousand, fifty-two".