20011533502 has 8 divisors (see below), whose sum is σ = 31322400336. Its totient is φ = 9570733392.

The previous prime is 20011533497. The next prime is 20011533517. The reversal of 20011533502 is 20533511002.

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

It is a super-2 number, since 2×20011533502² (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, 217516623 + ... + 217516714.

It is an arithmetic number, because the mean of its divisors is an integer number (3915300042).

Almost surely, 2^20011533502 is an apocalyptic number.

20011533502 is a deficient number, since it is larger than the sum of its proper divisors (11310866834).

20011533502 is a wasteful number, since it uses less digits than its factorization.

20011533502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435033362.

The product of its (nonzero) digits is 900, while the sum is 22.

The spelling of 20011533502 in words is "twenty billion, eleven million, five hundred thirty-three thousand, five hundred two".