50778205402511 has 2 divisors, whose sum is σ = 50778205402512. Its totient is φ = 50778205402510.

The previous prime is 50778205402499. The next prime is 50778205402583. The reversal of 50778205402511 is 11520450287705.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50778205402511 - 2³⁰ = 50777131660687 is a prime.

It is a super-2 number, since 2×50778205402511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50778205432511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389102701255 + 25389102701256.

It is an arithmetic number, because the mean of its divisors is an integer number (25389102701256).

Almost surely, 2^{50778205402511} is an apocalyptic number.

50778205402511 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778205402511 is an equidigital number, since it uses as much as digits as its factorization.

50778205402511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784000, while the sum is 47.

The spelling of 50778205402511 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred two thousand, five hundred eleven".