61111081802 has 16 divisors (see below), whose sum is σ = 94077692352. Its totient is φ = 29762221440.

The previous prime is 61111081771. The next prime is 61111081853. The reversal of 61111081802 is 20818011116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2580743 + ... + 2604314.

It is an arithmetic number, because the mean of its divisors is an integer number (5879855772).

Almost surely, 2^61111081802 is an apocalyptic number.

61111081802 is a deficient number, since it is larger than the sum of its proper divisors (32966610550).

61111081802 is a wasteful number, since it uses less digits than its factorization.

61111081802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185213.

The product of its (nonzero) digits is 768, while the sum is 29.

Adding to 61111081802 its reverse (20818011116), we get a palindrome (81929092918).

The spelling of 61111081802 in words is "sixty-one billion, one hundred eleven million, eighty-one thousand, eight hundred two".