29028791641 has 4 divisors (see below), whose sum is σ = 30556622800. Its totient is φ = 27500960484.

The previous prime is 29028791639. The next prime is 29028791647. The reversal of 29028791641 is 14619782092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29028791641 - 2¹ = 29028791639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29028791647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763915551 + ... + 763915588.

It is an arithmetic number, because the mean of its divisors is an integer number (7639155700).

Almost surely, 2^29028791641 is an apocalyptic number.

It is an amenable number.

29028791641 is a deficient number, since it is larger than the sum of its proper divisors (1527831159).

29028791641 is a wasteful number, since it uses less digits than its factorization.

29028791641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527831158.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 29028791641 in words is "twenty-nine billion, twenty-eight million, seven hundred ninety-one thousand, six hundred forty-one".