102302772355447 has 4 divisors (see below), whose sum is σ = 102304814336296. Its totient is φ = 102300730374600.

The previous prime is 102302772355439. The next prime is 102302772355547. The reversal of 102302772355447 is 744553277203201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102302772355447 - 2³ = 102302772355439 is a prime.

It is a super-2 number, since 2×102302772355447² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102302772355394 and 102302772355403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102302772355547) 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, 1020915273 + ... + 1021015474.

It is an arithmetic number, because the mean of its divisors is an integer number (25576203584074).

Almost surely, 2^{102302772355447} is an apocalyptic number.

102302772355447 is a deficient number, since it is larger than the sum of its proper divisors (2041980849).

102302772355447 is an equidigital number, since it uses as much as digits as its factorization.

102302772355447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041980848.

The product of its (nonzero) digits is 9878400, while the sum is 52.

The spelling of 102302772355447 in words is "one hundred two trillion, three hundred two billion, seven hundred seventy-two million, three hundred fifty-five thousand, four hundred forty-seven".