20091019291092 has 48 divisors (see below), whose sum is σ = 52174785936000. Its totient is φ = 6685826097600.

The previous prime is 20091019291081. The next prime is 20091019291129. The reversal of 20091019291092 is 29019291019002.

20091019291092 is a `hidden beast` number, since 200 + 91 + 0 + 192 + 91 + 0 + 92 = 666.

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, 155217409 + ... + 155346792.

It is an arithmetic number, because the mean of its divisors is an integer number (1086974707000).

Almost surely, 2^{20091019291092} is an apocalyptic number.

It is an amenable number.

20091019291092 is an abundant number, since it is smaller than the sum of its proper divisors (32083766644908).

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

20091019291092 is a wasteful number, since it uses less digits than its factorization.

20091019291092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310564813 (or 310564805 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The spelling of 20091019291092 in words is "twenty trillion, ninety-one billion, nineteen million, two hundred ninety-one thousand, ninety-two".