61051061000 has 64 divisors (see below), whose sum is σ = 147785742000. Its totient is φ = 23578329600.

The previous prime is 61051060999. The next prime is 61051061021. The reversal of 61051061000 is 16015016.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15382084 + 61035678916 = 3922^2 + 247054^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 1023605 + ... + 1081604.

Almost surely, 2^61051061000 is an apocalyptic number.

It is an amenable number.

61051061000 is an abundant number, since it is smaller than the sum of its proper divisors (86734681000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61051061000 is a wasteful number, since it uses less digits than its factorization.

61051061000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105259 (or 2105245 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 61051061000 its reverse (16015016), we get a palindrome (61067076016).

The spelling of 61051061000 in words is "sixty-one billion, fifty-one million, sixty-one thousand".