42640242615610 has 8 divisors (see below), whose sum is σ = 76752436708116. Its totient is φ = 17056097046240.

The previous prime is 42640242615601. The next prime is 42640242615611. The reversal of 42640242615610 is 1651624204624.

It can be written as a sum of positive squares in 2 ways, for example, as 42436273861969 + 203968753641 = 6514313^2 + 451629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42640242615611) 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, 2132012130771 + ... + 2132012130790.

Almost surely, 2^{42640242615610} is an apocalyptic number.

42640242615610 is a deficient number, since it is larger than the sum of its proper divisors (34112194092506).

42640242615610 is a wasteful number, since it uses less digits than its factorization.

42640242615610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264024261568.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 42640242615610 in words is "forty-two trillion, six hundred forty billion, two hundred forty-two million, six hundred fifteen thousand, six hundred ten".