22511551554452 has 12 divisors (see below), whose sum is σ = 39401481403200. Its totient is φ = 11253985439256.

The previous prime is 22511551554451. The next prime is 22511551554497. The reversal of 22511551554452 is 25445515511522.

It is a junction number, because it is equal to n+sod(n) for n = 22511551554397 and 22511551554406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22511551554451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447556202 + ... + 447606497.

It is an arithmetic number, because the mean of its divisors is an integer number (3283456783600).

Almost surely, 2^{22511551554452} is an apocalyptic number.

It is an amenable number.

22511551554452 is a deficient number, since it is larger than the sum of its proper divisors (16889929848748).

22511551554452 is a wasteful number, since it uses less digits than its factorization.

22511551554452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895168990 (or 895168988 counting only the distinct ones).

The product of its digits is 2000000, while the sum is 47.

The spelling of 22511551554452 in words is "twenty-two trillion, five hundred eleven billion, five hundred fifty-one million, five hundred fifty-four thousand, four hundred fifty-two".