1260415656978 has 32 divisors (see below), whose sum is σ = 2528186240832. Its totient is φ = 418913812800.

The previous prime is 1260415656977. The next prime is 1260415657003. The reversal of 1260415656978 is 8796565140621.

It is not an unprimeable number, because it can be changed into a prime (1260415656971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4566825 + ... + 4834947.

It is an arithmetic number, because the mean of its divisors is an integer number (79005820026).

Almost surely, 2^{1260415656978} is an apocalyptic number.

1260415656978 is an abundant number, since it is smaller than the sum of its proper divisors (1267770583854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1260415656978 is a wasteful number, since it uses less digits than its factorization.

1260415656978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270410.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 1260415656978 in words is "one trillion, two hundred sixty billion, four hundred fifteen million, six hundred fifty-six thousand, nine hundred seventy-eight".