51026402020672 has 28 divisors (see below), whose sum is σ = 109044402396916. Its totient is φ = 23550647086080.

The previous prime is 51026402020661. The next prime is 51026402020673. The reversal of 51026402020672 is 27602020462015.

It can be written as a sum of positive squares in 2 ways, for example, as 2747584717056 + 48278817303616 = 1657584^2 + 6948296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51026402020673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30664904229 + ... + 30664905892.

It is an arithmetic number, because the mean of its divisors is an integer number (3894442942747).

Almost surely, 2^{51026402020672} is an apocalyptic number.

51026402020672 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51026402020672 is an abundant number, since it is smaller than the sum of its proper divisors (58018000376244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51026402020672 is a wasteful number, since it uses less digits than its factorization.

51026402020672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61329810146 (or 61329810136 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 51026402020672 its reverse (27602020462015), we get a palindrome (78628422482687).

The spelling of 51026402020672 in words is "fifty-one trillion, twenty-six billion, four hundred two million, twenty thousand, six hundred seventy-two".