20011390894 has 8 divisors (see below), whose sum is σ = 32745912408. Its totient is φ = 9096086760.

The previous prime is 20011390849. The next prime is 20011390901. The reversal of 20011390894 is 49809311002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20011390894² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454804317 + ... + 454804360.

It is an arithmetic number, because the mean of its divisors is an integer number (4093239051).

Almost surely, 2^20011390894 is an apocalyptic number.

20011390894 is a deficient number, since it is larger than the sum of its proper divisors (12734521514).

20011390894 is a wasteful number, since it uses less digits than its factorization.

20011390894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909608690.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 20011390894 in words is "twenty billion, eleven million, three hundred ninety thousand, eight hundred ninety-four".