55551061011 has 16 divisors (see below), whose sum is σ = 74392199424. Its totient is φ = 36872301024.

The previous prime is 55551060997. The next prime is 55551061021. The reversal of 55551061011 is 11016015555.

It is not a de Polignac number, because 55551061011 - 2²¹ = 55548963859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55551061011.

It is not an unprimeable number, because it can be changed into a prime (55551061021) 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, 665346 + ... + 744168.

It is an arithmetic number, because the mean of its divisors is an integer number (4649512464).

Almost surely, 2^55551061011 is an apocalyptic number.

55551061011 is a deficient number, since it is larger than the sum of its proper divisors (18841138413).

55551061011 is a wasteful number, since it uses less digits than its factorization.

55551061011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79850.

The product of its (nonzero) digits is 3750, while the sum is 30.

Adding to 55551061011 its reverse (11016015555), we get a palindrome (66567076566).

The spelling of 55551061011 in words is "fifty-five billion, five hundred fifty-one million, sixty-one thousand, eleven".