51411642709 has 32 divisors (see below), whose sum is σ = 64181569536. Its totient is φ = 40172267520.

The previous prime is 51411642707. The next prime is 51411642769. The reversal of 51411642709 is 90724611415.

It is a happy number.

It is not a de Polignac number, because 51411642709 - 2¹ = 51411642707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51411642707) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955689 + ... + 1008049.

It is an arithmetic number, because the mean of its divisors is an integer number (2005674048).

Almost surely, 2^51411642709 is an apocalyptic number.

It is an amenable number.

51411642709 is a deficient number, since it is larger than the sum of its proper divisors (12769926827).

51411642709 is a wasteful number, since it uses less digits than its factorization.

51411642709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52645.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 51411642709 in words is "fifty-one billion, four hundred eleven million, six hundred forty-two thousand, seven hundred nine".