1391275807488 has 216 divisors, whose sum is σ = 4591910083488. Its totient is φ = 396860276736.

The previous prime is 1391275807463. The next prime is 1391275807573. The reversal of 1391275807488 is 8847085721931.

1391275807488 is a `hidden beast` number, since 1 + 3 + 9 + 1 + 2 + 7 + 580 + 7 + 48 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9881070 + ... + 10020882.

Almost surely, 2^{1391275807488} is an apocalyptic number.

1391275807488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391275807488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295955041744).

1391275807488 is an abundant number, since it is smaller than the sum of its proper divisors (3200634276000).

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

1391275807488 is a wasteful number, since it uses less digits than its factorization.

1391275807488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140459 (or 140442 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 1391275807488 in words is "one trillion, three hundred ninety-one billion, two hundred seventy-five million, eight hundred seven thousand, four hundred eighty-eight".