29993755012540 has 24 divisors (see below), whose sum is σ = 68712966029232. Its totient is φ = 10906820004480.

The previous prime is 29993755012537. The next prime is 29993755012547. The reversal of 29993755012540 is 4521055739992.

It is a super-3 number, since 3×29993755012540³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29993755012547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68167624809 + ... + 68167625248.

It is an arithmetic number, because the mean of its divisors is an integer number (2863040251218).

Almost surely, 2^{29993755012540} is an apocalyptic number.

29993755012540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29993755012540 is an abundant number, since it is smaller than the sum of its proper divisors (38719211016692).

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

29993755012540 is a wasteful number, since it uses less digits than its factorization.

29993755012540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136335250077 (or 136335250075 counting only the distinct ones).

The product of its (nonzero) digits is 30618000, while the sum is 61.

The spelling of 29993755012540 in words is "twenty-nine trillion, nine hundred ninety-three billion, seven hundred fifty-five million, twelve thousand, five hundred forty".