11621754554 has 4 divisors (see below), whose sum is σ = 17432631834. Its totient is φ = 5810877276.

The previous prime is 11621754539. The next prime is 11621754581. The reversal of 11621754554 is 45545712611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11453922529 + 167832025 = 107023^2 + 12955^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2905438637 + ... + 2905438640.

Almost surely, 2^11621754554 is an apocalyptic number.

11621754554 is a deficient number, since it is larger than the sum of its proper divisors (5810877280).

11621754554 is an equidigital number, since it uses as much as digits as its factorization.

11621754554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810877279.

The product of its digits is 168000, while the sum is 41.

The spelling of 11621754554 in words is "eleven billion, six hundred twenty-one million, seven hundred fifty-four thousand, five hundred fifty-four".