42730652601661 has 4 divisors (see below), whose sum is σ = 42738134773824. Its totient is φ = 42723170429500.

The previous prime is 42730652601653. The next prime is 42730652601691. The reversal of 42730652601661 is 16610625603724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42730652601661 - 2³ = 42730652601653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42730652601691) 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, 3741077515 + ... + 3741088936.

It is an arithmetic number, because the mean of its divisors is an integer number (10684533693456).

Almost surely, 2^{42730652601661} is an apocalyptic number.

It is an amenable number.

42730652601661 is a deficient number, since it is larger than the sum of its proper divisors (7482172163).

42730652601661 is an equidigital number, since it uses as much as digits as its factorization.

42730652601661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482172162.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 42730652601661 in words is "forty-two trillion, seven hundred thirty billion, six hundred fifty-two million, six hundred one thousand, six hundred sixty-one".