20955181274 has 16 divisors (see below), whose sum is σ = 34728792768. Its totient is φ = 9432510912.

The previous prime is 20955181267. The next prime is 20955181333. The reversal of 20955181274 is 47218155902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13397672 + ... + 13399235.

It is an arithmetic number, because the mean of its divisors is an integer number (2170549548).

Almost surely, 2^20955181274 is an apocalyptic number.

20955181274 is a deficient number, since it is larger than the sum of its proper divisors (13773611494).

20955181274 is a wasteful number, since it uses less digits than its factorization.

20955181274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26796949.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 20955181274 in words is "twenty billion, nine hundred fifty-five million, one hundred eighty-one thousand, two hundred seventy-four".