78090051345 has 16 divisors (see below), whose sum is σ = 125591465472. Its totient is φ = 41432232960.

The previous prime is 78090051337. The next prime is 78090051349. The reversal of 78090051345 is 54315009087.

It is not a de Polignac number, because 78090051345 - 2³ = 78090051337 is a prime.

It is a super-2 number, since 2×78090051345² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78090051297 and 78090051306.

It is not an unprimeable number, because it can be changed into a prime (78090051349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13484161 + ... + 13489950.

It is an arithmetic number, because the mean of its divisors is an integer number (7849466592).

Almost surely, 2^78090051345 is an apocalyptic number.

It is an amenable number.

78090051345 is a deficient number, since it is larger than the sum of its proper divisors (47501414127).

78090051345 is a wasteful number, since it uses less digits than its factorization.

78090051345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26974312.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 78090051345 in words is "seventy-eight billion, ninety million, fifty-one thousand, three hundred forty-five".