1626121057253 has 32 divisors (see below), whose sum is σ = 2031184097280. Its totient is φ = 1264726935360.

The previous prime is 1626121057147. The next prime is 1626121057271. The reversal of 1626121057253 is 3527501216261.

It is not a de Polignac number, because 1626121057253 - 2²⁴ = 1626104280037 is a prime.

It is a super-2 number, since 2×1626121057253² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1626121057253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626121057553) 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, 93034751 + ... + 93052227.

It is an arithmetic number, because the mean of its divisors is an integer number (63474503040).

Almost surely, 2^{1626121057253} is an apocalyptic number.

It is an amenable number.

1626121057253 is a deficient number, since it is larger than the sum of its proper divisors (405063040027).

1626121057253 is a wasteful number, since it uses less digits than its factorization.

1626121057253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 1626121057253 in words is "one trillion, six hundred twenty-six billion, one hundred twenty-one million, fifty-seven thousand, two hundred fifty-three".