1145807477220 has 96 divisors (see below), whose sum is σ = 3667695107328. Its totient is φ = 261819482112.

The previous prime is 1145807477203. The next prime is 1145807477239. The reversal of 1145807477220 is 227747085411.

It is a self number, because there is not a number n which added to its sum of digits gives 1145807477220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 979732 + ... + 1803188.

It is an arithmetic number, because the mean of its divisors is an integer number (38205157368).

Almost surely, 2^{1145807477220} is an apocalyptic number.

1145807477220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145807477220 is an abundant number, since it is smaller than the sum of its proper divisors (2521887630108).

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

1145807477220 is a wasteful number, since it uses less digits than its factorization.

1145807477220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826789 (or 826787 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 48.

The spelling of 1145807477220 in words is "one trillion, one hundred forty-five billion, eight hundred seven million, four hundred seventy-seven thousand, two hundred twenty".