42091731510528 has 288 divisors, whose sum is σ = 129010240006144. Its totient is φ = 11934236860416.

The previous prime is 42091731510503. The next prime is 42091731510533. The reversal of 42091731510528 is 82501513719024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664221501 + ... + 664284867.

Almost surely, 2^{42091731510528} is an apocalyptic number.

42091731510528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42091731510528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64505120003072).

42091731510528 is an abundant number, since it is smaller than the sum of its proper divisors (86918508495616).

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

42091731510528 is a wasteful number, since it uses less digits than its factorization.

42091731510528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64337 (or 64323 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 42091731510528 in words is "forty-two trillion, ninety-one billion, seven hundred thirty-one million, five hundred ten thousand, five hundred twenty-eight".