50661011091 has 16 divisors (see below), whose sum is σ = 69055008768. Its totient is φ = 33021964800.

The previous prime is 50661011083. The next prime is 50661011101. The reversal of 50661011091 is 19011016605.

It is not a de Polignac number, because 50661011091 - 2³ = 50661011083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50661011081) 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, 41550 + ... + 321011.

It is an arithmetic number, because the mean of its divisors is an integer number (4315938048).

Almost surely, 2^50661011091 is an apocalyptic number.

50661011091 is a deficient number, since it is larger than the sum of its proper divisors (18393997677).

50661011091 is a wasteful number, since it uses less digits than its factorization.

50661011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363602.

The product of its (nonzero) digits is 1620, while the sum is 30.

Adding to 50661011091 its reverse (19011016605), we get a palindrome (69672027696).

The spelling of 50661011091 in words is "fifty billion, six hundred sixty-one million, eleven thousand, ninety-one".