2661040490 has 8 divisors (see below), whose sum is σ = 4789872900. Its totient is φ = 1064416192.

The previous prime is 2661040463. The next prime is 2661040511. The reversal of 2661040490 is 940401662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2363029321 + 298011169 = 48611^2 + 17263^2 .

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

It is a super-2 number, since 2×2661040490² = 14162272978838880200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133052015 + ... + 133052034.

Almost surely, 2^2661040490 is an apocalyptic number.

2661040490 is a deficient number, since it is larger than the sum of its proper divisors (2128832410).

2661040490 is a wasteful number, since it uses less digits than its factorization.

2661040490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266104056.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2661040490 is about 51585.2739645725. The cubic root of 2661040490 is about 1385.7466187790.

The spelling of 2661040490 in words is "two billion, six hundred sixty-one million, forty thousand, four hundred ninety".