20355001366554 has 64 divisors (see below), whose sum is σ = 47900339038080. Its totient is φ = 6385053692160.

The previous prime is 20355001366541. The next prime is 20355001366559. The reversal of 20355001366554 is 45566310055302.

20355001366554 is a `hidden beast` number, since 2 + 0 + 3 + 5 + 500 + 1 + 36 + 65 + 54 = 666.

It is not an unprimeable number, because it can be changed into a prime (20355001366559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5654184 + ... + 8525244.

It is an arithmetic number, because the mean of its divisors is an integer number (748442797470).

Almost surely, 2^{20355001366554} is an apocalyptic number.

20355001366554 is an abundant number, since it is smaller than the sum of its proper divisors (27545337671526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20355001366554 is a wasteful number, since it uses less digits than its factorization.

20355001366554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878812 (or 2878806 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 20355001366554 in words is "twenty trillion, three hundred fifty-five billion, one million, three hundred sixty-six thousand, five hundred fifty-four".