4538197878401 has 4 divisors (see below), whose sum is σ = 4950761321904. Its totient is φ = 4125634434900.

The previous prime is 4538197878337. The next prime is 4538197878407. The reversal of 4538197878401 is 1048787918354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4538197878401 - 2⁶ = 4538197878337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4538197878407) 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, 206281721735 + ... + 206281721756.

It is an arithmetic number, because the mean of its divisors is an integer number (1237690330476).

Almost surely, 2^{4538197878401} is an apocalyptic number.

It is an amenable number.

4538197878401 is a deficient number, since it is larger than the sum of its proper divisors (412563443503).

4538197878401 is a wasteful number, since it uses less digits than its factorization.

4538197878401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412563443502.

The product of its (nonzero) digits is 54190080, while the sum is 65.

The spelling of 4538197878401 in words is "four trillion, five hundred thirty-eight billion, one hundred ninety-seven million, eight hundred seventy-eight thousand, four hundred one".