30136756440 has 256 divisors, whose sum is σ = 107305067520. Its totient is φ = 6627778560.

The previous prime is 30136756439. The next prime is 30136756453. The reversal of 30136756440 is 4465763103.

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, 2508127 + ... + 2520113.

It is an arithmetic number, because the mean of its divisors is an integer number (419160420).

Almost surely, 2^30136756440 is an apocalyptic number.

30136756440 is a gapful number since it is divisible by the number (30) 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 30136756440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53652533760).

30136756440 is an abundant number, since it is smaller than the sum of its proper divisors (77168311080).

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

30136756440 is a wasteful number, since it uses less digits than its factorization.

30136756440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12122 (or 12118 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 30136756440 in words is "thirty billion, one hundred thirty-six million, seven hundred fifty-six thousand, four hundred forty".