51073740026 has 4 divisors (see below), whose sum is σ = 76610610042. Its totient is φ = 25536870012.

The previous prime is 51073740019. The next prime is 51073740043. The reversal of 51073740026 is 62004737015.

It is a Cunningham number, because it is equal to 225995²+1.

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., 51073740025 + 1 = 225995^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768435005 + ... + 12768435008.

Almost surely, 2^51073740026 is an apocalyptic number.

51073740026 is a deficient number, since it is larger than the sum of its proper divisors (25536870016).

51073740026 is a wasteful number, since it uses less digits than its factorization.

51073740026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25536870015.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 51073740026 in words is "fifty-one billion, seventy-three million, seven hundred forty thousand, twenty-six".