1020642515630 has 16 divisors (see below), whose sum is σ = 1856096287920. Its totient is φ = 404048170752.

The previous prime is 1020642515623. The next prime is 1020642515639. The reversal of 1020642515630 is 365152460201.

It is a super-2 number, since 2×1020642515630² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020642515639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526103420 + ... + 526105359.

It is an arithmetic number, because the mean of its divisors is an integer number (116006017995).

Almost surely, 2^{1020642515630} is an apocalyptic number.

1020642515630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020642515630 is a deficient number, since it is larger than the sum of its proper divisors (835453772290).

1020642515630 is a wasteful number, since it uses less digits than its factorization.

1020642515630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052208883.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 1020642515630 its reverse (365152460201), we get a palindrome (1385794975831).

The spelling of 1020642515630 in words is "one trillion, twenty billion, six hundred forty-two million, five hundred fifteen thousand, six hundred thirty".