20371961335040 has 144 divisors (see below), whose sum is σ = 56906372812800. Its totient is φ = 6984672307200.

The previous prime is 20371961335009. The next prime is 20371961335081. The reversal of 20371961335040 is 4053316917302.

It is a junction number, because it is equal to n+sod(n) for n = 20371961334982 and 20371961335000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22761536 + ... + 23639615.

Almost surely, 2^{20371961335040} is an apocalyptic number.

20371961335040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20371961335040 is an abundant number, since it is smaller than the sum of its proper divisors (36534411477760).

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

20371961335040 is an frugal number, since it uses more digits than its factorization.

20371961335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46401193 (or 46401165 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 20371961335040 in words is "twenty trillion, three hundred seventy-one billion, nine hundred sixty-one million, three hundred thirty-five thousand, forty".