20170168702040 has 96 divisors (see below), whose sum is σ = 52844142517200. Its totient is φ = 6908699185920.

The previous prime is 20170168702027. The next prime is 20170168702069. The reversal of 20170168702040 is 4020786107102.

It is a junction number, because it is equal to n+sod(n) for n = 20170168701985 and 20170168702003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3052271 + ... + 7046750.

Almost surely, 2^{20170168702040} is an apocalyptic number.

20170168702040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20170168702040 is an abundant number, since it is smaller than the sum of its proper divisors (32673973815160).

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

20170168702040 is a wasteful number, since it uses less digits than its factorization.

20170168702040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100065 (or 10100054 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 20170168702040 in words is "twenty trillion, one hundred seventy billion, one hundred sixty-eight million, seven hundred two thousand, forty".