29368139640 has 128 divisors (see below), whose sum is σ = 105990336000. Its totient is φ = 6359413248.

The previous prime is 29368139623. The next prime is 29368139683. The reversal of 29368139640 is 4693186392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904095 + ... + 936014.

It is an arithmetic number, because the mean of its divisors is an integer number (828049500).

Almost surely, 2^29368139640 is an apocalyptic number.

29368139640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29368139640 is an abundant number, since it is smaller than the sum of its proper divisors (76622196360).

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

29368139640 is a wasteful number, since it uses less digits than its factorization.

29368139640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840149 (or 1840145 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 29368139640 in words is "twenty-nine billion, three hundred sixty-eight million, one hundred thirty-nine thousand, six hundred forty".