102636861053 has 4 divisors (see below), whose sum is σ = 102650297568. Its totient is φ = 102623424540.

The previous prime is 102636861043. The next prime is 102636861101. The reversal of 102636861053 is 350168636201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350168636201 = 77521 ⋅4517081.

It is a cyclic number.

It is not a de Polignac number, because 102636861053 - 2²⁸ = 102368425597 is a prime.

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 102636861053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102636861013) 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, 6706793 + ... + 6722078.

It is an arithmetic number, because the mean of its divisors is an integer number (25662574392).

Almost surely, 2^102636861053 is an apocalyptic number.

It is an amenable number.

102636861053 is a deficient number, since it is larger than the sum of its proper divisors (13436515).

102636861053 is an equidigital number, since it uses as much as digits as its factorization.

102636861053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436514.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 102636861053 in words is "one hundred two billion, six hundred thirty-six million, eight hundred sixty-one thousand, fifty-three".