20886742074 has 16 divisors (see below), whose sum is σ = 45571073760. Its totient is φ = 6329315760.

The previous prime is 20886741983. The next prime is 20886742103. The reversal of 20886742074 is 47024768802.

It is a happy number.

It is a Curzon number.

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, 158232829 + ... + 158232960.

It is an arithmetic number, because the mean of its divisors is an integer number (2848192110).

Almost surely, 2^20886742074 is an apocalyptic number.

20886742074 is an abundant number, since it is smaller than the sum of its proper divisors (24684331686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20886742074 is a wasteful number, since it uses less digits than its factorization.

20886742074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316465805.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 20886742074 in words is "twenty billion, eight hundred eighty-six million, seven hundred forty-two thousand, seventy-four".