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11385181380 = 2235437983673
BaseRepresentation
bin10101001101001110…
…00001010011000100
31002101110020010202110
422212213001103010
5141304101301010
65121423541020
7552064305426
oct124647012304
932343203673
1011385181380
114912702311
122258a5a770
1310c597b021
147a00d8816
154697c7120
hex2a69c14c4

11385181380 has 192 divisors, whose sum is σ = 33480437760. Its totient is φ = 2888331264.

The previous prime is 11385181373. The next prime is 11385181411. The reversal of 11385181380 is 8318158311.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16916724 + ... + 16917396.

It is an arithmetic number, because the mean of its divisors is an integer number (174377280).

Almost surely, 211385181380 is an apocalyptic number.

11385181380 is a gapful number since it is divisible by the number (10) 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 11385181380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16740218880).

11385181380 is an abundant number, since it is smaller than the sum of its proper divisors (22095256380).

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

11385181380 is a wasteful number, since it uses less digits than its factorization.

11385181380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 11385181380 in words is "eleven billion, three hundred eighty-five million, one hundred eighty-one thousand, three hundred eighty".