61011111010 has 16 divisors (see below), whose sum is σ = 109823398200. Its totient is φ = 24403689216.

The previous prime is 61011111001. The next prime is 61011111053. The reversal of 61011111010 is 1011111016.

It can be written as a sum of positive squares in 4 ways, for example, as 58173098481 + 2838012529 = 241191^2 + 53273^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340186 + ... + 487594.

Almost surely, 2^61011111010 is an apocalyptic number.

61011111010 is a deficient number, since it is larger than the sum of its proper divisors (48812287190).

61011111010 is a wasteful number, since it uses less digits than its factorization.

61011111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188805.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 61011111010 its reverse (1011111016), we get a palindrome (62022222026).

It can be divided in two parts, 6101 and 1111010, that added together give a palindrome (1117111).

The spelling of 61011111010 in words is "sixty-one billion, eleven million, one hundred eleven thousand, ten".