4906609272661 has 4 divisors (see below), whose sum is σ = 4950030593772. Its totient is φ = 4863187951552.

The previous prime is 4906609272647. The next prime is 4906609272667. The reversal of 4906609272661 is 1662729066094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 777625912561 + 4128983360100 = 881831^2 + 2031990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4906609272661 - 2⁷ = 4906609272533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4906609272596 and 4906609272605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4906609272667) 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, 21710660386 + ... + 21710660611.

It is an arithmetic number, because the mean of its divisors is an integer number (1237507648443).

Almost surely, 2^{4906609272661} is an apocalyptic number.

It is an amenable number.

4906609272661 is a deficient number, since it is larger than the sum of its proper divisors (43421321111).

4906609272661 is a wasteful number, since it uses less digits than its factorization.

4906609272661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43421321110.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 4906609272661 in words is "four trillion, nine hundred six billion, six hundred nine million, two hundred seventy-two thousand, six hundred sixty-one".