1055510733621 has 32 divisors (see below), whose sum is σ = 1554505666560. Its totient is φ = 634756377024.

The previous prime is 1055510733617. The next prime is 1055510733643. The reversal of 1055510733621 is 1263370155501.

It is not a de Polignac number, because 1055510733621 - 2² = 1055510733617 is a prime.

It is a super-2 number, since 2×1055510733621² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055510733621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055510733721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6047581 + ... + 6219666.

It is an arithmetic number, because the mean of its divisors is an integer number (48578302080).

Almost surely, 2^{1055510733621} is an apocalyptic number.

It is an amenable number.

1055510733621 is a deficient number, since it is larger than the sum of its proper divisors (498994932939).

1055510733621 is a wasteful number, since it uses less digits than its factorization.

1055510733621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12267345.

The product of its (nonzero) digits is 94500, while the sum is 39.

The spelling of 1055510733621 in words is "one trillion, fifty-five billion, five hundred ten million, seven hundred thirty-three thousand, six hundred twenty-one".