1020418571440 has 40 divisors (see below), whose sum is σ = 2430338385888. Its totient is φ = 398212124160.

The previous prime is 1020418571407. The next prime is 1020418571443. The reversal of 1020418571440 is 441758140201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1020418571440.

It is not an unprimeable number, because it can be changed into a prime (1020418571443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155548332 + ... + 155554891.

Almost surely, 2^{1020418571440} is an apocalyptic number.

1020418571440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020418571440 is an abundant number, since it is smaller than the sum of its proper divisors (1409919814448).

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

1020418571440 is a wasteful number, since it uses less digits than its factorization.

1020418571440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311103277 (or 311103271 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 1020418571440 in words is "one trillion, twenty billion, four hundred eighteen million, five hundred seventy-one thousand, four hundred forty".