1157444564532 has 12 divisors (see below), whose sum is σ = 2700703983936. Its totient is φ = 385814854840.

The previous prime is 1157444564519. The next prime is 1157444564539. The reversal of 1157444564532 is 2354654447511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1157444564532² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157444564539) 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, 48226856844 + ... + 48226856867.

It is an arithmetic number, because the mean of its divisors is an integer number (225058665328).

Almost surely, 2^{1157444564532} is an apocalyptic number.

1157444564532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1157444564532 is an abundant number, since it is smaller than the sum of its proper divisors (1543259419404).

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

1157444564532 is a wasteful number, since it uses less digits than its factorization.

1157444564532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96453713718 (or 96453713716 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 51.

The spelling of 1157444564532 in words is "one trillion, one hundred fifty-seven billion, four hundred forty-four million, five hundred sixty-four thousand, five hundred thirty-two".