61261531454041 has 4 divisors (see below), whose sum is σ = 62755715148084. Its totient is φ = 59767347760000.

The previous prime is 61261531453973. The next prime is 61261531454047. The reversal of 61261531454041 is 14045413516216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1498736644441 + 59762794809600 = 1224229^2 + 7730640^2 .

It is a cyclic number.

It is not a de Polignac number, because 61261531454041 - 2¹⁷ = 61261531322969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61261531454047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747091846960 + ... + 747091847041.

It is an arithmetic number, because the mean of its divisors is an integer number (15688928787021).

Almost surely, 2^{61261531454041} is an apocalyptic number.

It is an amenable number.

61261531454041 is a deficient number, since it is larger than the sum of its proper divisors (1494183694043).

61261531454041 is a wasteful number, since it uses less digits than its factorization.

61261531454041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494183694042.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 61261531454041 in words is "sixty-one trillion, two hundred sixty-one billion, five hundred thirty-one million, four hundred fifty-four thousand, forty-one".