61142405005 has 32 divisors (see below), whose sum is σ = 83582005248. Its totient is φ = 42502785600.

The previous prime is 61142404979. The next prime is 61142405029. The reversal of 61142405005 is 50050424116.

It is not a de Polignac number, because 61142405005 - 2¹¹ = 61142402957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1788220 + ... + 1822090.

It is an arithmetic number, because the mean of its divisors is an integer number (2611937664).

Almost surely, 2^61142405005 is an apocalyptic number.

It is an amenable number.

61142405005 is a deficient number, since it is larger than the sum of its proper divisors (22439600243).

61142405005 is a wasteful number, since it uses less digits than its factorization.

61142405005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35337.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 61142405005 in words is "sixty-one billion, one hundred forty-two million, four hundred five thousand, five".