1181880097152 has 128 divisors (see below), whose sum is σ = 3353456129760. Its totient is φ = 367504392192.

The previous prime is 1181880097081. The next prime is 1181880097159. The reversal of 1181880097152 is 2517900881811.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1181880097152² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1181880097095 and 1181880097104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181880097159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63433 + ... + 1538760.

Almost surely, 2^{1181880097152} is an apocalyptic number.

1181880097152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1181880097152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676728064880).

1181880097152 is an abundant number, since it is smaller than the sum of its proper divisors (2171576032608).

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

1181880097152 is a wasteful number, since it uses less digits than its factorization.

1181880097152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602340 (or 1602328 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 51.

The spelling of 1181880097152 in words is "one trillion, one hundred eighty-one billion, eight hundred eighty million, ninety-seven thousand, one hundred fifty-two".