21361486772041 has 8 divisors (see below), whose sum is σ = 23040233987904. Its totient is φ = 19687818974160.

The previous prime is 21361486772039. The next prime is 21361486772053. The reversal of 21361486772041 is 14027768416312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21361486772041 - 2¹ = 21361486772039 is a prime.

It is a super-2 number, since 2×21361486772041² (a number of 27 digits) contains 22 as substring.

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 21361486772041.

It is not an unprimeable number, because it can be changed into a prime (21361486772341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269845755 + ... + 1269862576.

It is an arithmetic number, because the mean of its divisors is an integer number (2880029248488).

Almost surely, 2^{21361486772041} is an apocalyptic number.

It is an amenable number.

21361486772041 is a deficient number, since it is larger than the sum of its proper divisors (1678747215863).

21361486772041 is a wasteful number, since it uses less digits than its factorization.

21361486772041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539708991.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 21361486772041 in words is "twenty-one trillion, three hundred sixty-one billion, four hundred eighty-six million, seven hundred seventy-two thousand, forty-one".