130078773617557 has 4 divisors (see below), whose sum is σ = 130132150219756. Its totient is φ = 130025397015360.

The previous prime is 130078773617539. The next prime is 130078773617567. The reversal of 130078773617557 is 755716377870031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79765869018276 + 50312904599281 = 8931174^2 + 7093159^2 .

It is a cyclic number.

It is not a de Polignac number, because 130078773617557 - 2¹⁵ = 130078773584789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130078773617492 and 130078773617501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130078773617567) 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, 26688297444 + ... + 26688302317.

It is an arithmetic number, because the mean of its divisors is an integer number (32533037554939).

Almost surely, 2^{130078773617557} is an apocalyptic number.

It is an amenable number.

130078773617557 is a deficient number, since it is larger than the sum of its proper divisors (53376602199).

130078773617557 is an equidigital number, since it uses as much as digits as its factorization.

130078773617557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53376602198.

The product of its (nonzero) digits is 181515600, while the sum is 67.

The spelling of 130078773617557 in words is "one hundred thirty trillion, seventy-eight billion, seven hundred seventy-three million, six hundred seventeen thousand, five hundred fifty-seven".