51462630242 has 4 divisors (see below), whose sum is σ = 77193945366. Its totient is φ = 25731315120.

The previous prime is 51462630181. The next prime is 51462630251. The reversal of 51462630242 is 24203626415.

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., 50323500241 + 1139130001 = 224329^2 + 33751^2 .

It is a super-2 number, since 2×51462630242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12865657559 + ... + 12865657562.

Almost surely, 2^51462630242 is an apocalyptic number.

51462630242 is a deficient number, since it is larger than the sum of its proper divisors (25731315124).

51462630242 is a wasteful number, since it uses less digits than its factorization.

51462630242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25731315123.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 51462630242 in words is "fifty-one billion, four hundred sixty-two million, six hundred thirty thousand, two hundred forty-two".