20147075500 has 48 divisors (see below), whose sum is σ = 44831483424. Its totient is φ = 7906766400.

The previous prime is 20147075419. The next prime is 20147075521. The reversal of 20147075500 is 557074102.

It is a super-3 number, since 3×20147075500³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353634 + ... + 406633.

It is an arithmetic number, because the mean of its divisors is an integer number (933989238).

Almost surely, 2^20147075500 is an apocalyptic number.

20147075500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20147075500 is an abundant number, since it is smaller than the sum of its proper divisors (24684407924).

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

20147075500 is a wasteful number, since it uses less digits than its factorization.

20147075500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760339 (or 760327 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The spelling of 20147075500 in words is "twenty billion, one hundred forty-seven million, seventy-five thousand, five hundred".