50778205401064 has 8 divisors (see below), whose sum is σ = 95209135127010. Its totient is φ = 25389102700528.

The previous prime is 50778205401061. The next prime is 50778205401067. The reversal of 50778205401064 is 46010450287705.

It is an interprime number because it is at equal distance from previous prime (50778205401061) and next prime (50778205401067).

It can be written as a sum of positive squares in only one way, i.e., 30817486822500 + 19960718578564 = 5551350^2 + 4467742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×50778205401064² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50778205400999 and 50778205401017.

It is not an unprimeable number, because it can be changed into a prime (50778205401061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3173637837559 + ... + 3173637837574.

Almost surely, 2^{50778205401064} is an apocalyptic number.

It is an amenable number.

50778205401064 is a deficient number, since it is larger than the sum of its proper divisors (44430929725946).

50778205401064 is a wasteful number, since it uses less digits than its factorization.

50778205401064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347275675139 (or 6347275675135 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

Adding to 50778205401064 its reverse (46010450287705), we get a palindrome (96788655688769).

The spelling of 50778205401064 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred one thousand, sixty-four".