7948405178404 has 6 divisors (see below), whose sum is σ = 13909709062214. Its totient is φ = 3974202589200.

The previous prime is 7948405178401. The next prime is 7948405178453. The reversal of 7948405178404 is 4048715048497.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5849151924004 + 2099253254400 = 2418502^2 + 1448880^2 .

It is not an unprimeable number, because it can be changed into a prime (7948405178401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993550647297 + ... + 993550647304.

Almost surely, 2^{7948405178404} is an apocalyptic number.

It is an amenable number.

7948405178404 is a deficient number, since it is larger than the sum of its proper divisors (5961303883810).

7948405178404 is a wasteful number, since it uses less digits than its factorization.

7948405178404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987101294605 (or 1987101294603 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 7948405178404 in words is "seven trillion, nine hundred forty-eight billion, four hundred five million, one hundred seventy-eight thousand, four hundred four".