20180735672 has 8 divisors (see below), whose sum is σ = 37838879400. Its totient is φ = 10090367832.

The previous prime is 20180735669. The next prime is 20180735723. The reversal of 20180735672 is 27653708102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261295972 + ... + 1261295987.

It is an arithmetic number, because the mean of its divisors is an integer number (4729859925).

Almost surely, 2^20180735672 is an apocalyptic number.

It is an amenable number.

20180735672 is a deficient number, since it is larger than the sum of its proper divisors (17658143728).

20180735672 is a wasteful number, since it uses less digits than its factorization.

20180735672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522591965 (or 2522591961 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 20180735672 in words is "twenty billion, one hundred eighty million, seven hundred thirty-five thousand, six hundred seventy-two".