1061611505 has 8 divisors (see below), whose sum is σ = 1286547624. Its totient is φ = 840880000.

The previous prime is 1061611451. The next prime is 1061611531. The reversal of 1061611505 is 5051161601.

It can be written as a sum of positive squares in 4 ways, for example, as 290327521 + 771283984 = 17039^2 + 27772^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1061611505 - 2¹⁰ = 1061610481 is a prime.

It is a super-2 number, since 2×1061611505² = 2254037975096730050, which contains 22 as substring.

It is a Duffinian number.

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, 1050596 + ... + 1051605.

It is an arithmetic number, because the mean of its divisors is an integer number (160818453).

Almost surely, 2^1061611505 is an apocalyptic number.

It is an amenable number.

1061611505 is a deficient number, since it is larger than the sum of its proper divisors (224936119).

1061611505 is a wasteful number, since it uses less digits than its factorization.

1061611505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102307.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1061611505 is about 32582.3802844421. The cubic root of 1061611505 is about 1020.1292624212.

The spelling of 1061611505 in words is "one billion, sixty-one million, six hundred eleven thousand, five hundred five".