20408877880402 has 8 divisors (see below), whose sum is σ = 33396345622512. Its totient is φ = 9276762672900.

The previous prime is 20408877880393. The next prime is 20408877880463.

20408877880402 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463838133624 + ... + 463838133667.

It is an arithmetic number, because the mean of its divisors is an integer number (4174543202814).

Almost surely, 2^{20408877880402} is an apocalyptic number.

20408877880402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20408877880402 is a deficient number, since it is larger than the sum of its proper divisors (12987467742110).

20408877880402 is a wasteful number, since it uses less digits than its factorization.

20408877880402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927676267304.

The product of its (nonzero) digits is 12845056, while the sum is 58.

The spelling of 20408877880402 in words is "twenty trillion, four hundred eight billion, eight hundred seventy-seven million, eight hundred eighty thousand, four hundred two".