2078360138257 has 32 divisors (see below), whose sum is σ = 2405677663872. Its totient is φ = 1778380268544.

The previous prime is 2078360138221. The next prime is 2078360138287. The reversal of 2078360138257 is 7528310638702.

It is not a de Polignac number, because 2078360138257 - 2³⁹ = 1528604324369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2078360138287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149440098 + ... + 149454004.

It is an arithmetic number, because the mean of its divisors is an integer number (75177426996).

Almost surely, 2^{2078360138257} is an apocalyptic number.

It is an amenable number.

2078360138257 is a deficient number, since it is larger than the sum of its proper divisors (327317525615).

2078360138257 is a wasteful number, since it uses less digits than its factorization.

2078360138257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24097.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 2078360138257 in words is "two trillion, seventy-eight billion, three hundred sixty million, one hundred thirty-eight thousand, two hundred fifty-seven".