1263531360378 has 64 divisors (see below), whose sum is σ = 2958773287680. Its totient is φ = 352172812800.

The previous prime is 1263531360181. The next prime is 1263531360401. The reversal of 1263531360378 is 8730631353621.

It is a super-2 number, since 2×1263531360378² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25235008 + ... + 25285028.

It is an arithmetic number, because the mean of its divisors is an integer number (46230832620).

Almost surely, 2^{1263531360378} is an apocalyptic number.

1263531360378 is an abundant number, since it is smaller than the sum of its proper divisors (1695241927302).

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

1263531360378 is a wasteful number, since it uses less digits than its factorization.

1263531360378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64743.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 1263531360378 in words is "one trillion, two hundred sixty-three billion, five hundred thirty-one million, three hundred sixty thousand, three hundred seventy-eight".