539690661432 has 512 divisors, whose sum is σ = 1790576928000. Its totient is φ = 150869827584.

The previous prime is 539690661421. The next prime is 539690661451. The reversal of 539690661432 is 234166096935.

539690661432 is a `hidden beast` number, since 539 + 6 + 9 + 0 + 6 + 61 + 43 + 2 = 666.

539690661432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 112129458 + ... + 112134270.

Almost surely, 2^539690661432 is an apocalyptic number.

539690661432 is a gapful number since it is divisible by the number (52) 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 539690661432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895288464000).

539690661432 is an abundant number, since it is smaller than the sum of its proper divisors (1250886266568).

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

539690661432 is a wasteful number, since it uses less digits than its factorization.

539690661432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899 (or 4877 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 539690661432 in words is "five hundred thirty-nine billion, six hundred ninety million, six hundred sixty-one thousand, four hundred thirty-two".