2051956671 has 8 divisors (see below), whose sum is σ = 2736441600. Its totient is φ = 1367721432.

The previous prime is 2051956657. The next prime is 2051956723. The reversal of 2051956671 is 1766591502.

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

It is not a de Polignac number, because 2051956671 - 2²³ = 2043568063 is a prime.

It is a super-2 number, since 2×2051956671² = 8421052359322804482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051955671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42321 + ... + 76778.

It is an arithmetic number, because the mean of its divisors is an integer number (342055200).

Almost surely, 2^2051956671 is an apocalyptic number.

2051956671 is a deficient number, since it is larger than the sum of its proper divisors (684484929).

2051956671 is a wasteful number, since it uses less digits than its factorization.

2051956671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124845.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 2051956671 is about 45298.5283535790. The cubic root of 2051956671 is about 1270.7381310615.

The spelling of 2051956671 in words is "two billion, fifty-one million, nine hundred fifty-six thousand, six hundred seventy-one".