20000015377 has 2 divisors, whose sum is σ = 20000015378. Its totient is φ = 20000015376.

The previous prime is 20000015369. The next prime is 20000015419. The reversal of 20000015377 is 77351000002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11741022736 + 8258992641 = 108356^2 + 90879^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000015377 - 2³ = 20000015369 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000015977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000007688 + 10000007689.

It is an arithmetic number, because the mean of its divisors is an integer number (10000007689).

Almost surely, 2^20000015377 is an apocalyptic number.

It is an amenable number.

20000015377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000015377 is an equidigital number, since it uses as much as digits as its factorization.

20000015377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 25.

Adding to 20000015377 its reverse (77351000002), we get a palindrome (97351015379).

The spelling of 20000015377 in words is "twenty billion, fifteen thousand, three hundred seventy-seven".