1331400025078 has 48 divisors (see below), whose sum is σ = 2134220774400. Its totient is φ = 622790098560.

The previous prime is 1331400025073. The next prime is 1331400025079. The reversal of 1331400025078 is 8705200041331.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331400025073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78870643 + ... + 78887521.

It is an arithmetic number, because the mean of its divisors is an integer number (44462932800).

Almost surely, 2^{1331400025078} is an apocalyptic number.

1331400025078 is a deficient number, since it is larger than the sum of its proper divisors (802820749322).

1331400025078 is a wasteful number, since it uses less digits than its factorization.

1331400025078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17725 (or 17708 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 1331400025078 in words is "one trillion, three hundred thirty-one billion, four hundred million, twenty-five thousand, seventy-eight".