20167070178642 has 64 divisors (see below), whose sum is σ = 41126564118528. Its totient is φ = 6591844800000.

The previous prime is 20167070178641. The next prime is 20167070178649. The reversal of 20167070178642 is 24687107076102.

It is not an unprimeable number, because it can be changed into a prime (20167070178641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27540267 + ... + 28263057.

It is an arithmetic number, because the mean of its divisors is an integer number (642602564352).

Almost surely, 2^{20167070178642} is an apocalyptic number.

20167070178642 is an abundant number, since it is smaller than the sum of its proper divisors (20959493939886).

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

20167070178642 is a wasteful number, since it uses less digits than its factorization.

20167070178642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723335.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 20167070178642 in words is "twenty trillion, one hundred sixty-seven billion, seventy million, one hundred seventy-eight thousand, six hundred forty-two".