2061758251 has 8 divisors (see below), whose sum is σ = 2404383200. Its totient is φ = 1767221064.

The previous prime is 2061758239. The next prime is 2061758273. The reversal of 2061758251 is 1528571602.

It is not a de Polignac number, because 2061758251 - 2⁷ = 2061758123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2061758251.

It is not an unprimeable number, because it can be changed into a prime (2061758221) 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, 3005136 + ... + 3005821.

It is an arithmetic number, because the mean of its divisors is an integer number (300547900).

Almost surely, 2^2061758251 is an apocalyptic number.

2061758251 is a deficient number, since it is larger than the sum of its proper divisors (342624949).

2061758251 is an frugal number, since it uses more digits than its factorization.

2061758251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010978 (or 6010964 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 2061758251 is about 45406.5881893806. The cubic root of 2061758251 is about 1272.7582293152.

The spelling of 2061758251 in words is "two billion, sixty-one million, seven hundred fifty-eight thousand, two hundred fifty-one".