26130161778 has 32 divisors (see below), whose sum is σ = 59941728384. Its totient is φ = 7438804992.

The previous prime is 26130161753. The next prime is 26130161789. The reversal of 26130161778 is 87716103162.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111375 + ... + 1134642.

It is an arithmetic number, because the mean of its divisors is an integer number (1873179012).

Almost surely, 2^26130161778 is an apocalyptic number.

26130161778 is an abundant number, since it is smaller than the sum of its proper divisors (33811566606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26130161778 is a wasteful number, since it uses less digits than its factorization.

26130161778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246306.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 26130161778 in words is "twenty-six billion, one hundred thirty million, one hundred sixty-one thousand, seven hundred seventy-eight".