20195639377000 has 32 divisors (see below), whose sum is σ = 47257796144520. Its totient is φ = 8078255750400.

The previous prime is 20195639376973. The next prime is 20195639377037. The reversal of 20195639377000 is 77393659102.

It can be written as a sum of positive squares in 4 ways, for example, as 7525442508516 + 12670196868484 = 2743254^2 + 3559522^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10097818689 + ... + 10097820688.

Almost surely, 2^{20195639377000} is an apocalyptic number.

20195639377000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20195639377000 is an abundant number, since it is smaller than the sum of its proper divisors (27062156767520).

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

20195639377000 is a wasteful number, since it uses less digits than its factorization.

20195639377000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20195639398 (or 20195639384 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 52.

The spelling of 20195639377000 in words is "twenty trillion, one hundred ninety-five billion, six hundred thirty-nine million, three hundred seventy-seven thousand".