11621505454 has 32 divisors (see below), whose sum is σ = 19513015200. Its totient is φ = 5155892352.

The previous prime is 11621505419. The next prime is 11621505461. The reversal of 11621505454 is 45450512611.

11621505454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11621505454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7072 + ... + 152620.

It is an arithmetic number, because the mean of its divisors is an integer number (609781725).

Almost surely, 2^11621505454 is an apocalyptic number.

11621505454 is a deficient number, since it is larger than the sum of its proper divisors (7891509746).

11621505454 is a wasteful number, since it uses less digits than its factorization.

11621505454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145684.

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 11621505454 in words is "eleven billion, six hundred twenty-one million, five hundred five thousand, four hundred fifty-four".