1020731765652 has 36 divisors (see below), whose sum is σ = 2715982185280. Its totient is φ = 322336346832.

The previous prime is 1020731765579. The next prime is 1020731765657. The reversal of 1020731765652 is 2565671370201.

It is a happy number.

1020731765652 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 73 + 17 + 6 + 565 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1020731765652² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020731765598 and 1020731765607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020731765657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746148268 + ... + 746149635.

Almost surely, 2^{1020731765652} is an apocalyptic number.

1020731765652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020731765652 is an abundant number, since it is smaller than the sum of its proper divisors (1695250419628).

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

1020731765652 is a wasteful number, since it uses less digits than its factorization.

1020731765652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492297932 (or 1492297927 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 1020731765652 in words is "one trillion, twenty billion, seven hundred thirty-one million, seven hundred sixty-five thousand, six hundred fifty-two".