6012661491 has 12 divisors (see below), whose sum is σ = 8886931768. Its totient is φ = 3915221184.

The previous prime is 6012661463. The next prime is 6012661519. The reversal of 6012661491 is 1941662106.

6012661491 is a `hidden beast` number, since 601 + 2 + 6 + 6 + 1 + 49 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6012661463) and next prime (6012661519).

It is not a de Polignac number, because 6012661491 - 2⁶ = 6012661427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6012661411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7767910 + ... + 7768683.

Almost surely, 2^6012661491 is an apocalyptic number.

6012661491 is a deficient number, since it is larger than the sum of its proper divisors (2874270277).

6012661491 is a wasteful number, since it uses less digits than its factorization.

6012661491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15536642 (or 15536639 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6012661491 is about 77541.3534251241. The cubic root of 6012661491 is about 1818.3978867856.

The spelling of 6012661491 in words is "six billion, twelve million, six hundred sixty-one thousand, four hundred ninety-one".