51370213372477 has 2 divisors, whose sum is σ = 51370213372478. Its totient is φ = 51370213372476.

The previous prime is 51370213372447. The next prime is 51370213372523. The reversal of 51370213372477 is 77427331207315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44782516016676 + 6587697355801 = 6691974^2 + 2566651^2 .

It is a cyclic number.

It is not a de Polignac number, because 51370213372477 - 2¹¹ = 51370213370429 is a prime.

It is a super-2 number, since 2×51370213372477² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51370213372427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25685106686238 + 25685106686239.

It is an arithmetic number, because the mean of its divisors is an integer number (25685106686239).

Almost surely, 2^{51370213372477} is an apocalyptic number.

It is an amenable number.

51370213372477 is a deficient number, since it is larger than the sum of its proper divisors (1).

51370213372477 is an equidigital number, since it uses as much as digits as its factorization.

51370213372477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5186160, while the sum is 52.

The spelling of 51370213372477 in words is "fifty-one trillion, three hundred seventy billion, two hundred thirteen million, three hundred seventy-two thousand, four hundred seventy-seven".