42664737758 has 4 divisors (see below), whose sum is σ = 63997106640. Its totient is φ = 21332368878.

The previous prime is 42664737749. The next prime is 42664737779. The reversal of 42664737758 is 85773746624.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42664737697 and 42664737706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666184438 + ... + 10666184441.

It is an arithmetic number, because the mean of its divisors is an integer number (15999276660).

Almost surely, 2^42664737758 is an apocalyptic number.

42664737758 is a deficient number, since it is larger than the sum of its proper divisors (21332368882).

42664737758 is a wasteful number, since it uses less digits than its factorization.

42664737758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21332368881.

The product of its digits is 47416320, while the sum is 59.

The spelling of 42664737758 in words is "forty-two billion, six hundred sixty-four million, seven hundred thirty-seven thousand, seven hundred fifty-eight".