3261511274772 has 24 divisors (see below), whose sum is σ = 7611974923392. Its totient is φ = 1086915860800.

The previous prime is 3261511274771. The next prime is 3261511274863. The reversal of 3261511274772 is 2774721151623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261511274771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31767129 + ... + 31869632.

It is an arithmetic number, because the mean of its divisors is an integer number (317165621808).

Almost surely, 2^{3261511274772} is an apocalyptic number.

It is an amenable number.

3261511274772 is an abundant number, since it is smaller than the sum of its proper divisors (4350463648620).

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

3261511274772 is a wasteful number, since it uses less digits than its factorization.

3261511274772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63641039 (or 63641037 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The spelling of 3261511274772 in words is "three trillion, two hundred sixty-one billion, five hundred eleven million, two hundred seventy-four thousand, seven hundred seventy-two".