20756943950 has 12 divisors (see below), whose sum is σ = 38607915840. Its totient is φ = 8302777560.

The previous prime is 20756943943. The next prime is 20756943967. The reversal of 20756943950 is 5934965702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 415138879 = 20756943950 / (2 + 0 + 7 + 5 + 6 + 9 + 4 + 3 + 9 + 5 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207569390 + ... + 207569489.

It is an arithmetic number, because the mean of its divisors is an integer number (3217326320).

Almost surely, 2^20756943950 is an apocalyptic number.

20756943950 is a deficient number, since it is larger than the sum of its proper divisors (17850971890).

20756943950 is a wasteful number, since it uses less digits than its factorization.

20756943950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415138891 (or 415138886 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 20756943950 in words is "twenty billion, seven hundred fifty-six million, nine hundred forty-three thousand, nine hundred fifty".