6201405261621 has 24 divisors (see below), whose sum is σ = 8997054708096. Its totient is φ = 4116067416000.

The previous prime is 6201405261613. The next prime is 6201405261641. The reversal of 6201405261621 is 1261625041026.

6201405261621 is a `hidden beast` number, since 6 + 2 + 0 + 1 + 4 + 0 + 5 + 26 + 1 + 621 = 666.

It is not a de Polignac number, because 6201405261621 - 2³ = 6201405261613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201405261641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4807201 + ... + 5959193.

It is an arithmetic number, because the mean of its divisors is an integer number (374877279504).

Almost surely, 2^{6201405261621} is an apocalyptic number.

It is an amenable number.

6201405261621 is a deficient number, since it is larger than the sum of its proper divisors (2795649446475).

6201405261621 is a wasteful number, since it uses less digits than its factorization.

6201405261621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154633 (or 1154630 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 6201405261621 in words is "six trillion, two hundred one billion, four hundred five million, two hundred sixty-one thousand, six hundred twenty-one".