51241343443546 has 4 divisors (see below), whose sum is σ = 76862015165322. Its totient is φ = 25620671721772.

The previous prime is 51241343443519. The next prime is 51241343443547. The reversal of 51241343443546 is 64534434314215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48584733575625 + 2656609867921 = 6970275^2 + 1629911^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51241343443546.

It is not an unprimeable number, because it can be changed into a prime (51241343443547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810335860885 + ... + 12810335860888.

Almost surely, 2^{51241343443546} is an apocalyptic number.

51241343443546 is a deficient number, since it is larger than the sum of its proper divisors (25620671721776).

51241343443546 is a wasteful number, since it uses less digits than its factorization.

51241343443546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25620671721775.

The product of its digits is 8294400, while the sum is 49.

The spelling of 51241343443546 in words is "fifty-one trillion, two hundred forty-one billion, three hundred forty-three million, four hundred forty-three thousand, five hundred forty-six".