1053612146621 has 4 divisors (see below), whose sum is σ = 1064474127612. Its totient is φ = 1042750165632.

The previous prime is 1053612146603. The next prime is 1053612146633. The reversal of 1053612146621 is 1266412163501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304357442596 + 749254704025 = 551686^2 + 865595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053612146621 is a prime.

It is a super-2 number, since 2×1053612146621² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053612149621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5430990350 + ... + 5430990543.

It is an arithmetic number, because the mean of its divisors is an integer number (266118531903).

Almost surely, 2^{1053612146621} is an apocalyptic number.

It is an amenable number.

1053612146621 is a deficient number, since it is larger than the sum of its proper divisors (10861980991).

1053612146621 is an equidigital number, since it uses as much as digits as its factorization.

1053612146621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861980990.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1053612146621 in words is "one trillion, fifty-three billion, six hundred twelve million, one hundred forty-six thousand, six hundred twenty-one".