10204400078 has 4 divisors (see below), whose sum is σ = 15306600120. Its totient is φ = 5102200038.

The previous prime is 10204400077. The next prime is 10204400131. The reversal of 10204400078 is 87000440201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87000440201 = 17 ⋅5117672953.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204400077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2551100018 + ... + 2551100021.

It is an arithmetic number, because the mean of its divisors is an integer number (3826650030).

Almost surely, 2^10204400078 is an apocalyptic number.

10204400078 is a deficient number, since it is larger than the sum of its proper divisors (5102200042).

10204400078 is an equidigital number, since it uses as much as digits as its factorization.

10204400078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102200041.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 10204400078 its reverse (87000440201), we get a palindrome (97204840279).

The spelling of 10204400078 in words is "ten billion, two hundred four million, four hundred thousand, seventy-eight".