42391690393536 has 448 divisors, whose sum is σ = 142416533007360. Its totient is φ = 12239602974720.

The previous prime is 42391690393517. The next prime is 42391690393541. The reversal of 42391690393536 is 63539309619324.

It is a happy number.

42391690393536 is a `hidden beast` number, since 4 + 2 + 3 + 9 + 1 + 6 + 9 + 0 + 3 + 93 + 536 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112167640 + ... + 112544936.

Almost surely, 2^{42391690393536} is an apocalyptic number.

42391690393536 is a gapful number since it is divisible by the number (46) 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 42391690393536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71208266503680).

42391690393536 is an abundant number, since it is smaller than the sum of its proper divisors (100024842613824).

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

42391690393536 is a wasteful number, since it uses less digits than its factorization.

42391690393536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377609 (or 377593 counting only the distinct ones).

The product of its (nonzero) digits is 85030560, while the sum is 63.

The spelling of 42391690393536 in words is "forty-two trillion, three hundred ninety-one billion, six hundred ninety million, three hundred ninety-three thousand, five hundred thirty-six".