6491051525741 has 4 divisors (see below), whose sum is σ = 6613524196092. Its totient is φ = 6368578855392.

The previous prime is 6491051525711. The next prime is 6491051525743. The reversal of 6491051525741 is 1475251501946.

It is a happy number.

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 5629487003716 + 861564522025 = 2372654^2 + 928205^2 .

It is a cyclic number.

It is not a de Polignac number, because 6491051525741 - 2¹⁸ = 6491051263597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6491051525741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491051525743) 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, 61236335096 + ... + 61236335201.

It is an arithmetic number, because the mean of its divisors is an integer number (1653381049023).

Almost surely, 2^{6491051525741} is an apocalyptic number.

It is an amenable number.

6491051525741 is a deficient number, since it is larger than the sum of its proper divisors (122472670351).

6491051525741 is a wasteful number, since it uses less digits than its factorization.

6491051525741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122472670350.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 6491051525741 in words is "six trillion, four hundred ninety-one billion, fifty-one million, five hundred twenty-five thousand, seven hundred forty-one".