29764043421 has 16 divisors (see below), whose sum is σ = 45455760000. Its totient is φ = 16970139648.

The previous prime is 29764043401. The next prime is 29764043429. The reversal of 29764043421 is 12434046792.

It is not a de Polignac number, because 29764043421 - 2⁹ = 29764042909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29764043429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568896 + ... + 1587753.

It is an arithmetic number, because the mean of its divisors is an integer number (2840985000).

Almost surely, 2^29764043421 is an apocalyptic number.

29764043421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

29764043421 is a deficient number, since it is larger than the sum of its proper divisors (15691716579).

29764043421 is a wasteful number, since it uses less digits than its factorization.

29764043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157108.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 29764043421 in words is "twenty-nine billion, seven hundred sixty-four million, forty-three thousand, four hundred twenty-one".