102450895970809 has 3 divisors (see below), whose sum is σ = 102450906092613. Its totient is φ = 102450885849006.

The previous prime is 102450895970737. The next prime is 102450895970833. The reversal of 102450895970809 is 908079598054201.

The square root of 102450895970809 is 10121803.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 102450895970809 - 2¹³ = 102450895962617 is a prime.

It is a super-2 number, since 2×102450895970809² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102450895970849) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5060902 + ... + 15182704.

It is an arithmetic number, because the mean of its divisors is an integer number (34150302030871).

Almost surely, 2^{102450895970809} is an apocalyptic number.

102450895970809 is the 10121803-rd square number.

102450895970809 is the 5060902-nd centered octagonal number.

It is an amenable number.

102450895970809 is a deficient number, since it is larger than the sum of its proper divisors (10121804).

102450895970809 is an frugal number, since it uses more digits than its factorization.

102450895970809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20243606 (or 10121803 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 67.

The spelling of 102450895970809 in words is "one hundred two trillion, four hundred fifty billion, eight hundred ninety-five million, nine hundred seventy thousand, eight hundred nine".