1021015630340 has 12 divisors (see below), whose sum is σ = 2144132823756. Its totient is φ = 408406252128.

The previous prime is 1021015630331. The next prime is 1021015630343. The reversal of 1021015630340 is 430365101201.

It can be written as a sum of positive squares in 2 ways, for example, as 303647285764 + 717368344576 = 551042^2 + 846976^2 .

It is not an unprimeable number, because it can be changed into a prime (1021015630343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25525390739 + ... + 25525390778.

It is an arithmetic number, because the mean of its divisors is an integer number (178677735313).

Almost surely, 2^{1021015630340} is an apocalyptic number.

1021015630340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021015630340 is an abundant number, since it is smaller than the sum of its proper divisors (1123117193416).

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

1021015630340 is a wasteful number, since it uses less digits than its factorization.

1021015630340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51050781526 (or 51050781524 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 1021015630340 in words is "one trillion, twenty-one billion, fifteen million, six hundred thirty thousand, three hundred forty".