42660716447531 has 16 divisors (see below), whose sum is σ = 52839927102144. Its totient is φ = 33538543219584.

The previous prime is 42660716447431. The next prime is 42660716447533. The reversal of 42660716447531 is 13574461706624.

It is not a de Polignac number, because 42660716447531 - 2¹⁰ = 42660716446507 is a prime.

It is a super-4 number, since 4×42660716447531⁴ (a number of 56 digits) contains 4444 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 (42660716447533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492976420 + ... + 1493004993.

It is an arithmetic number, because the mean of its divisors is an integer number (3302495443884).

Almost surely, 2^{42660716447531} is an apocalyptic number.

42660716447531 is a deficient number, since it is larger than the sum of its proper divisors (10179210654613).

42660716447531 is a wasteful number, since it uses less digits than its factorization.

42660716447531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985981590.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 42660716447531 in words is "forty-two trillion, six hundred sixty billion, seven hundred sixteen million, four hundred forty-seven thousand, five hundred thirty-one".