42061504640261 has 16 divisors (see below), whose sum is σ = 45704438438400. Its totient is φ = 38561540529600.

The previous prime is 42061504640143. The next prime is 42061504640327. The reversal of 42061504640261 is 16204640516024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42061504640261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42061504640761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29086295 + ... + 30498123.

It is an arithmetic number, because the mean of its divisors is an integer number (2856527402400).

Almost surely, 2^{42061504640261} is an apocalyptic number.

It is an amenable number.

42061504640261 is a deficient number, since it is larger than the sum of its proper divisors (3642933798139).

42061504640261 is a wasteful number, since it uses less digits than its factorization.

42061504640261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462460.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 42061504640261 in words is "forty-two trillion, sixty-one billion, five hundred four million, six hundred forty thousand, two hundred sixty-one".