1022155454240 has 48 divisors (see below), whose sum is σ = 2425206478968. Its totient is φ = 407107393536.

The previous prime is 1022155454213. The next prime is 1022155454273. The reversal of 1022155454240 is 424545512201.

It can be written as a sum of positive squares in 4 ways, for example, as 784507004176 + 237648450064 = 885724^2 + 487492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022155454240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13671887 + ... + 13746446.

Almost surely, 2^{1022155454240} is an apocalyptic number.

1022155454240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022155454240 is an abundant number, since it is smaller than the sum of its proper divisors (1403051024728).

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

1022155454240 is a wasteful number, since it uses less digits than its factorization.

1022155454240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27418581 (or 27418573 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 1022155454240 in words is "one trillion, twenty-two billion, one hundred fifty-five million, four hundred fifty-four thousand, two hundred forty".