427312081540 has 24 divisors (see below), whose sum is σ = 899077764312. Its totient is φ = 170596757760.

The previous prime is 427312081499. The next prime is 427312081561. The reversal of 427312081540 is 45180213724.

It can be written as a sum of positive squares in 4 ways, for example, as 11356738624 + 415955342916 = 106568^2 + 644946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 427312081540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20493999 + ... + 20514838.

It is an arithmetic number, because the mean of its divisors is an integer number (37461573513).

Almost surely, 2^427312081540 is an apocalyptic number.

It is an amenable number.

427312081540 is an abundant number, since it is smaller than the sum of its proper divisors (471765682772).

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

427312081540 is a wasteful number, since it uses less digits than its factorization.

427312081540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41009367 (or 41009365 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 427312081540 in words is "four hundred twenty-seven billion, three hundred twelve million, eighty-one thousand, five hundred forty".