42591037557 has 8 divisors (see below), whose sum is σ = 57339390784. Its totient is φ = 28118354688.

The previous prime is 42591037553. The next prime is 42591037597. The reversal of 42591037557 is 75573019524.

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

It is not a de Polignac number, because 42591037557 - 2² = 42591037553 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 (42591037553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68917228 + ... + 68917845.

It is an arithmetic number, because the mean of its divisors is an integer number (7167423848).

Almost surely, 2^42591037557 is an apocalyptic number.

It is an amenable number.

42591037557 is a deficient number, since it is larger than the sum of its proper divisors (14748353227).

42591037557 is a wasteful number, since it uses less digits than its factorization.

42591037557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137835179.

The product of its (nonzero) digits is 1323000, while the sum is 48.

The spelling of 42591037557 in words is "forty-two billion, five hundred ninety-one million, thirty-seven thousand, five hundred fifty-seven".