1267660402944 has 288 divisors, whose sum is σ = 3838847846400. Its totient is φ = 368141967360.

The previous prime is 1267660402913. The next prime is 1267660402979. The reversal of 1267660402944 is 4492040667621.

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, 51395287 + ... + 51419945.

It is an arithmetic number, because the mean of its divisors is an integer number (13329332800).

Almost surely, 2^{1267660402944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1267660402944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919423923200).

1267660402944 is an abundant number, since it is smaller than the sum of its proper divisors (2571187443456).

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

1267660402944 is a wasteful number, since it uses less digits than its factorization.

1267660402944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24981 (or 24967 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 1267660402944 in words is "one trillion, two hundred sixty-seven billion, six hundred sixty million, four hundred two thousand, nine hundred forty-four".