50778138313253 has 8 divisors (see below), whose sum is σ = 54803807928408. Its totient is φ = 46769562837504.

The previous prime is 50778138313249. The next prime is 50778138313261. The reversal of 50778138313253 is 35231383187705.

It can be written as a sum of positive squares in 4 ways, for example, as 92609445124 + 50685528868129 = 304318^2 + 7119377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50778138313253 - 2² = 50778138313249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778138318253) 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, 4273528676 + ... + 4273540557.

It is an arithmetic number, because the mean of its divisors is an integer number (6850475991051).

Almost surely, 2^{50778138313253} is an apocalyptic number.

It is an amenable number.

50778138313253 is a deficient number, since it is larger than the sum of its proper divisors (4025669615155).

50778138313253 is a wasteful number, since it uses less digits than its factorization.

50778138313253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547069703.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 50778138313253 in words is "fifty trillion, seven hundred seventy-eight billion, one hundred thirty-eight million, three hundred thirteen thousand, two hundred fifty-three".