20270553900 has 36 divisors (see below), whose sum is σ = 58649470152. Its totient is φ = 5405480960.

The previous prime is 20270553881. The next prime is 20270553923. The reversal of 20270553900 is 935507202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33783957 + ... + 33784556.

Almost surely, 2^20270553900 is an apocalyptic number.

20270553900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20270553900 is an abundant number, since it is smaller than the sum of its proper divisors (38378916252).

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

20270553900 is a wasteful number, since it uses less digits than its factorization.

20270553900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67568530 (or 67568523 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The spelling of 20270553900 in words is "twenty billion, two hundred seventy million, five hundred fifty-three thousand, nine hundred".