11211651552 has 24 divisors (see below), whose sum is σ = 29430585576. Its totient is φ = 3737217152.

The previous prime is 11211651547. The next prime is 11211651593. The reversal of 11211651552 is 25515611211.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×11211651552² (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 3 ways as a sum of consecutive naturals, for example, 58393923 + ... + 58394114.

It is an arithmetic number, because the mean of its divisors is an integer number (1226274399).

Almost surely, 2^11211651552 is an apocalyptic number.

11211651552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211651552 is an abundant number, since it is smaller than the sum of its proper divisors (18218934024).

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

11211651552 is a wasteful number, since it uses less digits than its factorization.

11211651552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116788050 (or 116788042 counting only the distinct ones).

The product of its digits is 3000, while the sum is 30.

The spelling of 11211651552 in words is "eleven billion, two hundred eleven million, six hundred fifty-one thousand, five hundred fifty-two".