1020640015344 has 40 divisors (see below), whose sum is σ = 2637937920592. Its totient is φ = 340047590400.

The previous prime is 1020640015319. The next prime is 1020640015357. The reversal of 1020640015344 is 4435100460201.

It is a congruent number.

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, 5080057 + ... + 5277144.

Almost surely, 2^{1020640015344} is an apocalyptic number.

It is an amenable number.

1020640015344 is an abundant number, since it is smaller than the sum of its proper divisors (1617297905248).

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

1020640015344 is a wasteful number, since it uses less digits than its factorization.

1020640015344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359265 (or 10359259 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1020640015344 its reverse (4435100460201), we get a palindrome (5455740475545).

The spelling of 1020640015344 in words is "one trillion, twenty billion, six hundred forty million, fifteen thousand, three hundred forty-four".