20011532454 has 24 divisors (see below), whose sum is σ = 43608953232. Its totient is φ = 6631951920.

The previous prime is 20011532419. The next prime is 20011532461. The reversal of 20011532454 is 45423511002.

20011532454 is a `hidden beast` number, since 200 + 1 + 1 + 5 + 3 + 2 + 454 = 666.

It is a super-2 number, since 2×20011532454² (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, 3210042 + ... + 3216269.

It is an arithmetic number, because the mean of its divisors is an integer number (1817039718).

Almost surely, 2^20011532454 is an apocalyptic number.

20011532454 is an abundant number, since it is smaller than the sum of its proper divisors (23597420778).

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

20011532454 is a wasteful number, since it uses less digits than its factorization.

20011532454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426492 (or 6426489 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20011532454 in words is "twenty billion, eleven million, five hundred thirty-two thousand, four hundred fifty-four".