20147555630 has 16 divisors (see below), whose sum is σ = 36274736304. Its totient is φ = 8056992000.

The previous prime is 20147555629. The next prime is 20147555639. The reversal of 20147555630 is 3655574102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147555639) by changing a digit.

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, 211772 + ... + 291791.

It is an arithmetic number, because the mean of its divisors is an integer number (2267171019).

Almost surely, 2^20147555630 is an apocalyptic number.

20147555630 is a deficient number, since it is larger than the sum of its proper divisors (16127180674).

20147555630 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 20147555630 = (57003155462)₉.

20147555630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507571.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 20147555630 in words is "twenty billion, one hundred forty-seven million, five hundred fifty-five thousand, six hundred thirty".