41521497361891 has 16 divisors (see below), whose sum is σ = 43041629056608. Its totient is φ = 40028379206400.

The previous prime is 41521497361889. The next prime is 41521497361937. The reversal of 41521497361891 is 19816379412514.

It is a cyclic number.

It is not a de Polignac number, because 41521497361891 - 2¹ = 41521497361889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41521497367891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16653805 + ... + 18983998.

It is an arithmetic number, because the mean of its divisors is an integer number (2690101816038).

Almost surely, 2^{41521497361891} is an apocalyptic number.

41521497361891 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

41521497361891 is a deficient number, since it is larger than the sum of its proper divisors (1520131694717).

41521497361891 is a wasteful number, since it uses less digits than its factorization.

41521497361891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35638182.

The product of its digits is 13063680, while the sum is 61.

The spelling of 41521497361891 in words is "forty-one trillion, five hundred twenty-one billion, four hundred ninety-seven million, three hundred sixty-one thousand, eight hundred ninety-one".