51027770220645 has 16 divisors (see below), whose sum is σ = 81767948908032. Its totient is φ = 27173638599360.

The previous prime is 51027770220611. The next prime is 51027770220649. The reversal of 51027770220645 is 54602207772015.

It is a happy number.

It is not a de Polignac number, because 51027770220645 - 2⁷ = 51027770220517 is a prime.

It is a super-3 number, since 3×51027770220645³ (a number of 42 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51027770220594 and 51027770220603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51027770220649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2573251317 + ... + 2573271146.

It is an arithmetic number, because the mean of its divisors is an integer number (5110496806752).

Almost surely, 2^{51027770220645} is an apocalyptic number.

It is an amenable number.

51027770220645 is a deficient number, since it is larger than the sum of its proper divisors (30740178687387).

51027770220645 is a wasteful number, since it uses less digits than its factorization.

51027770220645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146523132.

The product of its (nonzero) digits is 1646400, while the sum is 48.

The spelling of 51027770220645 in words is "fifty-one trillion, twenty-seven billion, seven hundred seventy million, two hundred twenty thousand, six hundred forty-five".