20693666750 has 32 divisors (see below), whose sum is σ = 38922238368. Its totient is φ = 8238216000.

The previous prime is 20693666731. The next prime is 20693666797. The reversal of 20693666750 is 5766639602.

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 15 ways as a sum of consecutive naturals, for example, 143399 + ... + 248898.

It is an arithmetic number, because the mean of its divisors is an integer number (1216319949).

Almost surely, 2^20693666750 is an apocalyptic number.

20693666750 is a deficient number, since it is larger than the sum of its proper divisors (18228571618).

20693666750 is a wasteful number, since it uses less digits than its factorization.

20693666750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392525 (or 392515 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 20693666750 in words is "twenty billion, six hundred ninety-three million, six hundred sixty-six thousand, seven hundred fifty".