20011253052 has 48 divisors (see below), whose sum is σ = 55084746752. Its totient is φ = 5533064640.

The previous prime is 20011253039. The next prime is 20011253071. The reversal of 20011253052 is 25035211002.

It is a super-2 number, since 2×20011253052² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 3839803 + ... + 3845010.

Almost surely, 2^20011253052 is an apocalyptic number.

It is an amenable number.

20011253052 is an abundant number, since it is smaller than the sum of its proper divisors (35073493700).

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

20011253052 is a wasteful number, since it uses less digits than its factorization.

20011253052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684858 (or 7684856 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20011253052 its reverse (25035211002), we get a palindrome (45046464054).

The spelling of 20011253052 in words is "twenty billion, eleven million, two hundred fifty-three thousand, fifty-two".