163654712138 has 16 divisors (see below), whose sum is σ = 258497376000. Its totient is φ = 77492093472.

The previous prime is 163654712101. The next prime is 163654712183. The reversal of 163654712138 is 831217456361.

It is a junction number, because it is equal to n+sod(n) for n = 163654712092 and 163654712101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688643 + ... + 895286.

It is an arithmetic number, because the mean of its divisors is an integer number (16156086000).

Almost surely, 2^163654712138 is an apocalyptic number.

163654712138 is a deficient number, since it is larger than the sum of its proper divisors (94842663862).

163654712138 is a wasteful number, since it uses less digits than its factorization.

163654712138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586669.

The product of its digits is 725760, while the sum is 47.

The spelling of 163654712138 in words is "one hundred sixty-three billion, six hundred fifty-four million, seven hundred twelve thousand, one hundred thirty-eight".