409979751659811 has 6 divisors (see below), whose sum is σ = 592192974619740. Its totient is φ = 273319834439868.

The previous prime is 409979751659741. The next prime is 409979751659843. The reversal of 409979751659811 is 118956157979904.

409979751659811 is a `hidden beast` number, since 4 + 0 + 9 + 9 + 7 + 9 + 7 + 5 + 1 + 6 + 598 + 11 = 666.

It is not a de Polignac number, because 409979751659811 - 2¹⁹ = 409979751135523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (409979751657811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22776652869981 + ... + 22776652869998.

It is an arithmetic number, because the mean of its divisors is an integer number (98698829103290).

Almost surely, 2^{409979751659811} is an apocalyptic number.

409979751659811 is a deficient number, since it is larger than the sum of its proper divisors (182213222959929).

409979751659811 is a wasteful number, since it uses less digits than its factorization.

409979751659811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45553305739985 (or 45553305739982 counting only the distinct ones).

The product of its (nonzero) digits is 1543147200, while the sum is 81.

The spelling of 409979751659811 in words is "four hundred nine trillion, nine hundred seventy-nine billion, seven hundred fifty-one million, six hundred fifty-nine thousand, eight hundred eleven".