20375421751740 has 384 divisors, whose sum is σ = 65984801541120. Its totient is φ = 4650682982400.

The previous prime is 20375421751723. The next prime is 20375421751757. The reversal of 20375421751740 is 4715712457302.

It is an interprime number because it is at equal distance from previous prime (20375421751723) and next prime (20375421751757).

It is a super-2 number, since 2×20375421751740² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20375421751740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2194913139 + ... + 2194922421.

It is an arithmetic number, because the mean of its divisors is an integer number (171835420680).

Almost surely, 2^{20375421751740} is an apocalyptic number.

20375421751740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20375421751740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32992400770560).

20375421751740 is an abundant number, since it is smaller than the sum of its proper divisors (45609379789380).

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

20375421751740 is a wasteful number, since it uses less digits than its factorization.

20375421751740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12173 (or 12171 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 48.

The spelling of 20375421751740 in words is "twenty trillion, three hundred seventy-five billion, four hundred twenty-one million, seven hundred fifty-one thousand, seven hundred forty".