1020452302640 has 80 divisors (see below), whose sum is σ = 2423361466368. Its totient is φ = 399441808128.

The previous prime is 1020452302621. The next prime is 1020452302693. The reversal of 1020452302640 is 462032540201.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37973849 + ... + 38000711.

Almost surely, 2^{1020452302640} is an apocalyptic number.

1020452302640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020452302640 is an abundant number, since it is smaller than the sum of its proper divisors (1402909163728).

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

1020452302640 is a wasteful number, since it uses less digits than its factorization.

1020452302640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37026 (or 37020 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1020452302640 its reverse (462032540201), we get a palindrome (1482484842841).

The spelling of 1020452302640 in words is "one trillion, twenty billion, four hundred fifty-two million, three hundred two thousand, six hundred forty".