1051253651253 has 32 divisors (see below), whose sum is σ = 1533305241216. Its totient is φ = 636796862208.

The previous prime is 1051253651251. The next prime is 1051253651257. The reversal of 1051253651253 is 3521563521501.

It is not a de Polignac number, because 1051253651253 - 2¹ = 1051253651251 is a prime.

It is a super-2 number, since 2×1051253651253² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051253651251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147126 + ... + 1457447.

It is an arithmetic number, because the mean of its divisors is an integer number (47915788788).

Almost surely, 2^{1051253651253} is an apocalyptic number.

1051253651253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1051253651253 is a deficient number, since it is larger than the sum of its proper divisors (482051589963).

1051253651253 is a wasteful number, since it uses less digits than its factorization.

1051253651253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604853.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 1051253651253 in words is "one trillion, fifty-one billion, two hundred fifty-three million, six hundred fifty-one thousand, two hundred fifty-three".