611131510947 has 6 divisors (see below), whose sum is σ = 814843819972. Its totient is φ = 407420104612.

The previous prime is 611131510943. The next prime is 611131510963. The reversal of 611131510947 is 749015131116.

It is not a de Polignac number, because 611131510947 - 2² = 611131510943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611131510943) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1128358 + ... + 1579700.

Almost surely, 2^611131510947 is an apocalyptic number.

611131510947 is a deficient number, since it is larger than the sum of its proper divisors (203712309025).

611131510947 is an frugal number, since it uses more digits than its factorization.

611131510947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902689 (or 451346 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The spelling of 611131510947 in words is "six hundred eleven billion, one hundred thirty-one million, five hundred ten thousand, nine hundred forty-seven".