654302451681 has 12 divisors (see below), whose sum is σ = 962935684308. Its totient is φ = 427971414624.

The previous prime is 654302451637. The next prime is 654302451683. The reversal of 654302451681 is 186154203456.

654302451681 is a `hidden beast` number, since 6 + 5 + 4 + 30 + 24 + 516 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 287956731456 + 366345720225 = 536616^2 + 605265^2 .

It is not a de Polignac number, because 654302451681 - 2²¹ = 654300354529 is a prime.

It is a super-3 number, since 3×654302451681³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (654302451683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 685851150 + ... + 685852103.

It is an arithmetic number, because the mean of its divisors is an integer number (80244640359).

Almost surely, 2^654302451681 is an apocalyptic number.

It is an amenable number.

654302451681 is a deficient number, since it is larger than the sum of its proper divisors (308633232627).

654302451681 is a wasteful number, since it uses less digits than its factorization.

654302451681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371703312 (or 1371703309 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 654302451681 in words is "six hundred fifty-four billion, three hundred two million, four hundred fifty-one thousand, six hundred eighty-one".