1091670472980 has 384 divisors, whose sum is σ = 3511083663360. Its totient is φ = 281449520640.

The previous prime is 1091670472979. The next prime is 1091670472987. The reversal of 1091670472980 is 892740761901.

1091670472980 is a `hidden beast` number, since 1 + 0 + 9 + 16 + 70 + 472 + 98 + 0 = 666.

1091670472980 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091670472987) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 767160549 + ... + 767161971.

It is an arithmetic number, because the mean of its divisors is an integer number (9143447040).

Almost surely, 2^{1091670472980} is an apocalyptic number.

1091670472980 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 1091670472980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1755541831680).

1091670472980 is an abundant number, since it is smaller than the sum of its proper divisors (2419413190380).

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

1091670472980 is a wasteful number, since it uses less digits than its factorization.

1091670472980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 1091670472980 in words is "one trillion, ninety-one billion, six hundred seventy million, four hundred seventy-two thousand, nine hundred eighty".