20142253945 has 16 divisors (see below), whose sum is σ = 26394144192. Its totient is φ = 14634410560.

The previous prime is 20142253921. The next prime is 20142253969. The reversal of 20142253945 is 54935224102.

It is an interprime number because it is at equal distance from previous prime (20142253921) and next prime (20142253969).

It is a de Polignac number, because none of the positive numbers 2^k-20142253945 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125047 + ... + 236476.

It is an arithmetic number, because the mean of its divisors is an integer number (1649634012).

Almost surely, 2^20142253945 is an apocalyptic number.

It is an amenable number.

20142253945 is a deficient number, since it is larger than the sum of its proper divisors (6251890247).

20142253945 is a wasteful number, since it uses less digits than its factorization.

20142253945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362552.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20142253945 in words is "twenty billion, one hundred forty-two million, two hundred fifty-three thousand, nine hundred forty-five".