42729370514565 has 48 divisors (see below), whose sum is σ = 81678381990912. Its totient is φ = 19005496062336.

The previous prime is 42729370514563. The next prime is 42729370514599. The reversal of 42729370514565 is 56541507392724.

It is not a de Polignac number, because 42729370514565 - 2¹ = 42729370514563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42729370514499 and 42729370514508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42729370514563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 785583589 + ... + 785637978.

It is an arithmetic number, because the mean of its divisors is an integer number (1701632958144).

Almost surely, 2^{42729370514565} is an apocalyptic number.

It is an amenable number.

42729370514565 is a deficient number, since it is larger than the sum of its proper divisors (38949011476347).

42729370514565 is a wasteful number, since it uses less digits than its factorization.

42729370514565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571221626 (or 1571221619 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 60.

The spelling of 42729370514565 in words is "forty-two trillion, seven hundred twenty-nine billion, three hundred seventy million, five hundred fourteen thousand, five hundred sixty-five".