20655553154 has 16 divisors (see below), whose sum is σ = 31630761792. Its totient is φ = 10112741808.

The previous prime is 20655553133. The next prime is 20655553169. The reversal of 20655553154 is 45135555602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140384 + ... + 247019.

It is an arithmetic number, because the mean of its divisors is an integer number (1976922612).

Almost surely, 2^20655553154 is an apocalyptic number.

20655553154 is a deficient number, since it is larger than the sum of its proper divisors (10975208638).

20655553154 is a wasteful number, since it uses less digits than its factorization.

20655553154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387961.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 20655553154 in words is "twenty billion, six hundred fifty-five million, five hundred fifty-three thousand, one hundred fifty-four".