50426537691 has 16 divisors (see below), whose sum is σ = 71401677984. Its totient is φ = 31546281984.

The previous prime is 50426537687. The next prime is 50426537729. The reversal of 50426537691 is 19673562405.

It is not a de Polignac number, because 50426537691 - 2² = 50426537687 is a prime.

It is a super-3 number, since 3×50426537691³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 50426537691.

It is not an unprimeable number, because it can be changed into a prime (50426537891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449810 + ... + 1484183.

It is an arithmetic number, because the mean of its divisors is an integer number (4462604874).

Almost surely, 2^50426537691 is an apocalyptic number.

50426537691 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

50426537691 is a deficient number, since it is larger than the sum of its proper divisors (20975140293).

50426537691 is a wasteful number, since it uses less digits than its factorization.

50426537691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934350.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 50426537691 in words is "fifty billion, four hundred twenty-six million, five hundred thirty-seven thousand, six hundred ninety-one".