102807798547 has 4 divisors (see below), whose sum is σ = 103375797616. Its totient is φ = 102239799480.

The previous prime is 102807798523. The next prime is 102807798559. The reversal of 102807798547 is 745897708201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102807798547 is a prime.

It is a super-2 number, since 2×102807798547² (a number of 23 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 = 102807798491 and 102807798500.

It is not an unprimeable number, because it can be changed into a prime (102807792547) 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, 283999263 + ... + 283999624.

It is an arithmetic number, because the mean of its divisors is an integer number (25843949404).

Almost surely, 2^102807798547 is an apocalyptic number.

102807798547 is a deficient number, since it is larger than the sum of its proper divisors (567999069).

102807798547 is an equidigital number, since it uses as much as digits as its factorization.

102807798547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567999068.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 102807798547 in words is "one hundred two billion, eight hundred seven million, seven hundred ninety-eight thousand, five hundred forty-seven".