1013451818440 has 16 divisors (see below), whose sum is σ = 2280266591580. Its totient is φ = 405380727360.

The previous prime is 1013451818437. The next prime is 1013451818453. The reversal of 1013451818440 is 448181543101.

It can be written as a sum of positive squares in 2 ways, for example, as 955533620196 + 57918198244 = 977514^2 + 240662^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 25336295461 = 1013451818440 / (1 + 0 + 1 + 3 + 4 + 5 + 1 + 8 + 1 + 8 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1013451818393 and 1013451818402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12668147691 + ... + 12668147770.

Almost surely, 2^{1013451818440} is an apocalyptic number.

1013451818440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013451818440 is an abundant number, since it is smaller than the sum of its proper divisors (1266814773140).

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

1013451818440 is a wasteful number, since it uses less digits than its factorization.

1013451818440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25336295472 (or 25336295468 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 1013451818440 in words is "one trillion, thirteen billion, four hundred fifty-one million, eight hundred eighteen thousand, four hundred forty".