51663462610274 has 4 divisors (see below), whose sum is σ = 77495193915414. Its totient is φ = 25831731305136.

The previous prime is 51663462610237. The next prime is 51663462610283. The reversal of 51663462610274 is 47201626436615.

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., 43500527913049 + 8162934697225 = 6595493^2 + 2857085^2 .

It is a super-2 number, since 2×51663462610274² (a number of 28 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, 12915865652567 + ... + 12915865652570.

Almost surely, 2^{51663462610274} is an apocalyptic number.

51663462610274 is a deficient number, since it is larger than the sum of its proper divisors (25831731305140).

51663462610274 is a wasteful number, since it uses less digits than its factorization.

51663462610274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831731305139.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 51663462610274 in words is "fifty-one trillion, six hundred sixty-three billion, four hundred sixty-two million, six hundred ten thousand, two hundred seventy-four".