30539978532 has 216 divisors, whose sum is σ = 96343752960. Its totient is φ = 8424440640.

The previous prime is 30539978531. The next prime is 30539978533. The reversal of 30539978532 is 23587993503.

It is a happy number.

30539978532 is a `hidden beast` number, since 3 + 0 + 5 + 39 + 9 + 78 + 532 = 666.

It is an interprime number because it is at equal distance from previous prime (30539978531) and next prime (30539978533).

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

It is not an unprimeable number, because it can be changed into a prime (30539978531) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1370157 + ... + 1392267.

Almost surely, 2^30539978532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30539978532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48171876480).

30539978532 is an abundant number, since it is smaller than the sum of its proper divisors (65803774428).

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

30539978532 is a wasteful number, since it uses less digits than its factorization.

30539978532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22173 (or 22152 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The spelling of 30539978532 in words is "thirty billion, five hundred thirty-nine million, nine hundred seventy-eight thousand, five hundred thirty-two".