29451788542 has 16 divisors (see below), whose sum is σ = 48690682992. Its totient is φ = 13249163520.

The previous prime is 29451788537. The next prime is 29451788549. The reversal of 29451788542 is 24588715492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29451788549) 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, 6898473 + ... + 6902740.

It is an arithmetic number, because the mean of its divisors is an integer number (3043167687).

Almost surely, 2^29451788542 is an apocalyptic number.

29451788542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

29451788542 is a deficient number, since it is larger than the sum of its proper divisors (19238894450).

29451788542 is a wasteful number, since it uses less digits than its factorization.

29451788542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13801323.

The product of its digits is 6451200, while the sum is 55.

The spelling of 29451788542 in words is "twenty-nine billion, four hundred fifty-one million, seven hundred eighty-eight thousand, five hundred forty-two".