51380772684550 has 12 divisors (see below), whose sum is σ = 95568237193356. Its totient is φ = 20552309073800.

The previous prime is 51380772684541. The next prime is 51380772684581. The reversal of 51380772684550 is 5548627708315.

It is a happy number.

It is a super-2 number, since 2×51380772684550² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 513807726796 + ... + 513807726895.

It is an arithmetic number, because the mean of its divisors is an integer number (7964019766113).

Almost surely, 2^{51380772684550} is an apocalyptic number.

51380772684550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51380772684550 is a deficient number, since it is larger than the sum of its proper divisors (44187464508806).

51380772684550 is a wasteful number, since it uses less digits than its factorization.

51380772684550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027615453703 (or 1027615453698 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 51380772684550 in words is "fifty-one trillion, three hundred eighty billion, seven hundred seventy-two million, six hundred eighty-four thousand, five hundred fifty".