20401154012 has 36 divisors (see below), whose sum is σ = 38242539720. Its totient is φ = 9519424992.

The previous prime is 20401153979. The next prime is 20401154023. The reversal of 20401154012 is 21045110402.

It is a happy number.

It is a super-2 number, since 2×20401154012² (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 11 ways as a sum of consecutive naturals, for example, 8687 + ... + 202182.

It is an arithmetic number, because the mean of its divisors is an integer number (1062292770).

Almost surely, 2^20401154012 is an apocalyptic number.

It is an amenable number.

20401154012 is a deficient number, since it is larger than the sum of its proper divisors (17841385708).

20401154012 is a wasteful number, since it uses less digits than its factorization.

20401154012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210978 (or 210957 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20401154012 its reverse (21045110402), we get a palindrome (41446264414).

The spelling of 20401154012 in words is "twenty billion, four hundred one million, one hundred fifty-four thousand, twelve".