50521300642 has 4 divisors (see below), whose sum is σ = 75781950966. Its totient is φ = 25260650320.

The previous prime is 50521300631. The next prime is 50521300649. The reversal of 50521300642 is 24600312505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24600312505 = 5 ⋅4920062501.

It can be written as a sum of positive squares in only one way, i.e., 50513012001 + 8288641 = 224751^2 + 2879^2 .

It is a super-2 number, since 2×50521300642² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50521300642.

It is not an unprimeable number, because it can be changed into a prime (50521300649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630325159 + ... + 12630325162.

Almost surely, 2^50521300642 is an apocalyptic number.

50521300642 is a deficient number, since it is larger than the sum of its proper divisors (25260650324).

50521300642 is a wasteful number, since it uses less digits than its factorization.

50521300642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25260650323.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 50521300642 in words is "fifty billion, five hundred twenty-one million, three hundred thousand, six hundred forty-two".