51266132474 has 4 divisors (see below), whose sum is σ = 76899198714. Its totient is φ = 25633066236.

The previous prime is 51266132429. The next prime is 51266132521. The reversal of 51266132474 is 47423166215.

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., 26838630625 + 24427501849 = 163825^2 + 156293^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12816533117 + ... + 12816533120.

Almost surely, 2^51266132474 is an apocalyptic number.

51266132474 is a deficient number, since it is larger than the sum of its proper divisors (25633066240).

51266132474 is a wasteful number, since it uses less digits than its factorization.

51266132474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25633066239.

The product of its digits is 241920, while the sum is 41.

Adding to 51266132474 its reverse (47423166215), we get a palindrome (98689298689).

The spelling of 51266132474 in words is "fifty-one billion, two hundred sixty-six million, one hundred thirty-two thousand, four hundred seventy-four".