20754129188670 has 64 divisors (see below), whose sum is σ = 50310635880960. Its totient is φ = 5478834860928.

The previous prime is 20754129188641. The next prime is 20754129188671. The reversal of 20754129188670 is 7688192145702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754129188671) 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, 7938852 + ... + 10224168.

It is an arithmetic number, because the mean of its divisors is an integer number (786103685640).

Almost surely, 2^{20754129188670} is an apocalyptic number.

20754129188670 is an abundant number, since it is smaller than the sum of its proper divisors (29556506692290).

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

20754129188670 is a wasteful number, since it uses less digits than its factorization.

20754129188670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288369.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 20754129188670 in words is "twenty trillion, seven hundred fifty-four billion, one hundred twenty-nine million, one hundred eighty-eight thousand, six hundred seventy".