51416687495 has 4 divisors (see below), whose sum is σ = 61700025000. Its totient is φ = 41133349992.

The previous prime is 51416687449. The next prime is 51416687507. The reversal of 51416687495 is 59478661415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59478661415 = 5 ⋅11895732283.

It is a cyclic number.

It is not a de Polignac number, because 51416687495 - 2⁸ = 51416687239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51416687495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5141668745 + ... + 5141668754.

It is an arithmetic number, because the mean of its divisors is an integer number (15425006250).

Almost surely, 2^51416687495 is an apocalyptic number.

51416687495 is a deficient number, since it is larger than the sum of its proper divisors (10283337505).

51416687495 is a wasteful number, since it uses less digits than its factorization.

51416687495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10283337504.

The product of its digits is 7257600, while the sum is 56.

The spelling of 51416687495 in words is "fifty-one billion, four hundred sixteen million, six hundred eighty-seven thousand, four hundred ninety-five".