29121957654955 has 32 divisors (see below), whose sum is σ = 39018240898560. Its totient is φ = 20682621818880.

The previous prime is 29121957654953. The next prime is 29121957654967. The reversal of 29121957654955 is 55945675912192.

It is not a de Polignac number, because 29121957654955 - 2¹ = 29121957654953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29121957654953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9734106 + ... + 12369184.

It is an arithmetic number, because the mean of its divisors is an integer number (1219320028080).

Almost surely, 2^{29121957654955} is an apocalyptic number.

29121957654955 is a deficient number, since it is larger than the sum of its proper divisors (9896283243605).

29121957654955 is a wasteful number, since it uses less digits than its factorization.

29121957654955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639811.

The product of its digits is 306180000, while the sum is 70.

The spelling of 29121957654955 in words is "twenty-nine trillion, one hundred twenty-one billion, nine hundred fifty-seven million, six hundred fifty-four thousand, nine hundred fifty-five".