10001401520 has 80 divisors (see below), whose sum is σ = 25797277440. Its totient is φ = 3575212800.

The previous prime is 10001401499. The next prime is 10001401523. The reversal of 10001401520 is 2510410001.

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

It is a junction number, because it is equal to n+sod(n) for n = 10001401495 and 10001401504.

It is not an unprimeable number, because it can be changed into a prime (10001401523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44396 + ... + 148235.

It is an arithmetic number, because the mean of its divisors is an integer number (322465968).

Almost surely, 2^10001401520 is an apocalyptic number.

10001401520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001401520 is an abundant number, since it is smaller than the sum of its proper divisors (15795875920).

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

10001401520 is a wasteful number, since it uses less digits than its factorization.

10001401520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192714 (or 192708 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 10001401520 its reverse (2510410001), we get a palindrome (12511811521).

The spelling of 10001401520 in words is "ten billion, one million, four hundred one thousand, five hundred twenty".