20768377370 has 16 divisors (see below), whose sum is σ = 40258701000. Its totient is φ = 7668323904.

The previous prime is 20768377361. The next prime is 20768377379. The reversal of 20768377370 is 7377386702.

It is an interprime number because it is at equal distance from previous prime (20768377361) and next prime (20768377379).

It can be written as a sum of positive squares in 4 ways, for example, as 6744844129 + 14023533241 = 82127^2 + 118421^2 .

It is not an unprimeable number, because it can be changed into a prime (20768377379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79878245 + ... + 79878504.

Almost surely, 2^20768377370 is an apocalyptic number.

20768377370 is a deficient number, since it is larger than the sum of its proper divisors (19490323630).

20768377370 is a wasteful number, since it uses less digits than its factorization.

20768377370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159756769.

The product of its (nonzero) digits is 2074464, while the sum is 50.

The spelling of 20768377370 in words is "twenty billion, seven hundred sixty-eight million, three hundred seventy-seven thousand, three hundred seventy".