20011545142 has 32 divisors (see below), whose sum is σ = 32034585600. Its totient is φ = 9348213888.

The previous prime is 20011545131. The next prime is 20011545263. The reversal of 20011545142 is 24154511002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2929543 + ... + 2936365.

It is an arithmetic number, because the mean of its divisors is an integer number (1001080800).

Almost surely, 2^20011545142 is an apocalyptic number.

20011545142 is a deficient number, since it is larger than the sum of its proper divisors (12023040458).

20011545142 is a wasteful number, since it uses less digits than its factorization.

20011545142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 20011545142 in words is "twenty billion, eleven million, five hundred forty-five thousand, one hundred forty-two".