20142694971 has 24 divisors (see below), whose sum is σ = 33293236704. Its totient is φ = 11495640960.

The previous prime is 20142694969. The next prime is 20142694973. The reversal of 20142694971 is 17949624102.

It is an interprime number because it is at equal distance from previous prime (20142694969) and next prime (20142694973).

It is not a de Polignac number, because 20142694971 - 2¹ = 20142694969 is a prime.

It is a super-3 number, since 3×20142694971³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20142694973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150370 + ... + 250791.

It is an arithmetic number, because the mean of its divisors is an integer number (1387218196).

Almost surely, 2^20142694971 is an apocalyptic number.

20142694971 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20142694971 is a deficient number, since it is larger than the sum of its proper divisors (13150541733).

20142694971 is a wasteful number, since it uses less digits than its factorization.

20142694971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401971 (or 401968 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 20142694971 in words is "twenty billion, one hundred forty-two million, six hundred ninety-four thousand, nine hundred seventy-one".