2051247641709 has 16 divisors (see below), whose sum is σ = 3125779130880. Its totient is φ = 1172115845040.

The previous prime is 2051247641701. The next prime is 2051247641713. The reversal of 2051247641709 is 9071467421502.

It is not a de Polignac number, because 2051247641709 - 2³ = 2051247641701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051247641701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65499 + ... + 2026520.

It is an arithmetic number, because the mean of its divisors is an integer number (195361195680).

Almost surely, 2^{2051247641709} is an apocalyptic number.

It is an amenable number.

2051247641709 is a deficient number, since it is larger than the sum of its proper divisors (1074531489171).

2051247641709 is a wasteful number, since it uses less digits than its factorization.

2051247641709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138720.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 2051247641709 in words is "two trillion, fifty-one billion, two hundred forty-seven million, six hundred forty-one thousand, seven hundred nine".