48690394281 has 9 divisors (see below), whose sum is σ = 70331525719. Its totient is φ = 32459821536.

The previous prime is 48690394273. The next prime is 48690394321. The reversal of 48690394281 is 18249309684.

The square root of 48690394281 is 220659.

It is a perfect power (a square), and thus also a powerful number.

48690394281 is a `hidden beast` number, since 486 + 90 + 39 + 42 + 8 + 1 = 666.

48690394281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 21139706025 + 27550688256 = 145395^2 + 165984^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 48690394281 - 2³ = 48690394273 is a prime.

It is a super-2 number, since 2×48690394281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48690394381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 625201 + ... + 698753.

Almost surely, 2^48690394281 is an apocalyptic number.

48690394281 is the 220659-th square number.

48690394281 is the 110330-th centered octagonal number.

It is an amenable number.

48690394281 is a deficient number, since it is larger than the sum of its proper divisors (21641131438).

48690394281 is an frugal number, since it uses more digits than its factorization.

48690394281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147112 (or 73556 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 48690394281 in words is "forty-eight billion, six hundred ninety million, three hundred ninety-four thousand, two hundred eighty-one".