11621588654 has 16 divisors (see below), whose sum is σ = 19877650128. Its totient is φ = 5048291712.

The previous prime is 11621588647. The next prime is 11621588663. The reversal of 11621588654 is 45688512611.

It is a super-2 number, since 2×11621588654² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11621588599 and 11621588608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13146152 + ... + 13147035.

It is an arithmetic number, because the mean of its divisors is an integer number (1242353133).

Almost surely, 2^11621588654 is an apocalyptic number.

11621588654 is a deficient number, since it is larger than the sum of its proper divisors (8256061474).

11621588654 is a wasteful number, since it uses less digits than its factorization.

11621588654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293219.

The product of its digits is 460800, while the sum is 47.

The spelling of 11621588654 in words is "eleven billion, six hundred twenty-one million, five hundred eighty-eight thousand, six hundred fifty-four".