2987928748261 has 8 divisors (see below), whose sum is σ = 3087806568704. Its totient is φ = 2888269241760.

The previous prime is 2987928748249. The next prime is 2987928748267. The reversal of 2987928748261 is 1628478297892.

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

It is a cyclic number.

It is not a de Polignac number, because 2987928748261 - 2²¹ = 2987926651109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987928748267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54550656 + ... + 54605401.

It is an arithmetic number, because the mean of its divisors is an integer number (385975821088).

Almost surely, 2^{2987928748261} is an apocalyptic number.

It is an amenable number.

2987928748261 is a deficient number, since it is larger than the sum of its proper divisors (99877820443).

2987928748261 is a wasteful number, since it uses less digits than its factorization.

2987928748261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109156971.

The product of its digits is 390168576, while the sum is 73.

The spelling of 2987928748261 in words is "two trillion, nine hundred eighty-seven billion, nine hundred twenty-eight million, seven hundred forty-eight thousand, two hundred sixty-one".