50005011005501 has 4 divisors (see below), whose sum is σ = 50011663269372. Its totient is φ = 49998358741632.

The previous prime is 50005011005491. The next prime is 50005011005503. The reversal of 50005011005501 is 10550011050005.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18797201909476 + 31207809096025 = 4335574^2 + 5586395^2 .

It is a cyclic number.

It is not a de Polignac number, because 50005011005501 - 2³⁴ = 49987831136317 is a prime.

It is a super-2 number, since 2×50005011005501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005011005503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326120660 + ... + 3326135693.

It is an arithmetic number, because the mean of its divisors is an integer number (12502915817343).

Almost surely, 2^{50005011005501} is an apocalyptic number.

It is an amenable number.

50005011005501 is a deficient number, since it is larger than the sum of its proper divisors (6652263871).

50005011005501 is an equidigital number, since it uses as much as digits as its factorization.

50005011005501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652263870.

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 50005011005501 its reverse (10550011050005), we get a palindrome (60555022055506).

The spelling of 50005011005501 in words is "fifty trillion, five billion, eleven million, five thousand, five hundred one".