20194653703550 has 48 divisors (see below), whose sum is σ = 38779693238400. Its totient is φ = 7816084070400.

The previous prime is 20194653703501. The next prime is 20194653703561. The reversal of 20194653703550 is 5530735649102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9122186 + ... + 11117714.

It is an arithmetic number, because the mean of its divisors is an integer number (807910275800).

Almost surely, 2^{20194653703550} is an apocalyptic number.

20194653703550 is a deficient number, since it is larger than the sum of its proper divisors (18585039534850).

20194653703550 is a wasteful number, since it uses less digits than its factorization.

20194653703550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002101 (or 2002096 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 50.

The spelling of 20194653703550 in words is "twenty trillion, one hundred ninety-four billion, six hundred fifty-three million, seven hundred three thousand, five hundred fifty".