42638753532 has 24 divisors (see below), whose sum is σ = 99549238096. Its totient is φ = 14204515968.

The previous prime is 42638753497. The next prime is 42638753539. The reversal of 42638753532 is 23535783624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42638753539) 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, 1029073 + ... + 1069704.

Almost surely, 2^42638753532 is an apocalyptic number.

It is an amenable number.

42638753532 is an abundant number, since it is smaller than the sum of its proper divisors (56910484564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42638753532 is a wasteful number, since it uses less digits than its factorization.

42638753532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100477 (or 2100475 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 48.

The spelling of 42638753532 in words is "forty-two billion, six hundred thirty-eight million, seven hundred fifty-three thousand, five hundred thirty-two".