20010401040 has 80 divisors (see below), whose sum is σ = 70893998208. Its totient is φ = 4573805568.

The previous prime is 20010401003. The next prime is 20010401069. The reversal of 20010401040 is 4010401002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×20010401040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 5953797 + ... + 5957156.

Almost surely, 2^20010401040 is an apocalyptic number.

20010401040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010401040 is an abundant number, since it is smaller than the sum of its proper divisors (50883597168).

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

20010401040 is a wasteful number, since it uses less digits than its factorization.

20010401040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910976 (or 11910970 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20010401040 its reverse (4010401002), we get a palindrome (24020802042).

The spelling of 20010401040 in words is "twenty billion, ten million, four hundred one thousand, forty".