1391390513760 has 384 divisors, whose sum is σ = 4875996303360. Its totient is φ = 331195392000.

The previous prime is 1391390513743. The next prime is 1391390513833. The reversal of 1391390513760 is 673150931931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 421504110 + ... + 421507410.

It is an arithmetic number, because the mean of its divisors is an integer number (12697907040).

Almost surely, 2^{1391390513760} is an apocalyptic number.

1391390513760 is a gapful number since it is divisible by the number (10) 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 1391390513760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437998151680).

1391390513760 is an abundant number, since it is smaller than the sum of its proper divisors (3484605789600).

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

1391390513760 is a wasteful number, since it uses less digits than its factorization.

1391390513760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542 (or 5534 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 48.

The spelling of 1391390513760 in words is "one trillion, three hundred ninety-one billion, three hundred ninety million, five hundred thirteen thousand, seven hundred sixty".