281626989364 has 48 divisors (see below), whose sum is σ = 596534222592. Its totient is φ = 113569316352.

The previous prime is 281626989349. The next prime is 281626989421. The reversal of 281626989364 is 463989626182.

It is a super-2 number, since 2×281626989364² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281626989296 and 281626989305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1907569 + ... + 2049895.

It is an arithmetic number, because the mean of its divisors is an integer number (12427796304).

Almost surely, 2^281626989364 is an apocalyptic number.

It is an amenable number.

281626989364 is an abundant number, since it is smaller than the sum of its proper divisors (314907233228).

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

281626989364 is a wasteful number, since it uses less digits than its factorization.

281626989364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146512 (or 146510 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 64.

The spelling of 281626989364 in words is "two hundred eighty-one billion, six hundred twenty-six million, nine hundred eighty-nine thousand, three hundred sixty-four".