1397603154816 has 768 divisors, whose sum is σ = 4741544908800. Its totient is φ = 409854297600.

The previous prime is 1397603154767. The next prime is 1397603154823. The reversal of 1397603154816 is 6184513067931.

1397603154816 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 60 + 31 + 548 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45083972721 + ... + 45083972751.

It is an arithmetic number, because the mean of its divisors is an integer number (6173886600).

Almost surely, 2^{1397603154816} is an apocalyptic number.

1397603154816 is a gapful number since it is divisible by the number (16) 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 1397603154816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2370772454400).

1397603154816 is an abundant number, since it is smaller than the sum of its proper divisors (3343941753984).

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

1397603154816 is an frugal number, since it uses more digits than its factorization.

1397603154816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 1397603154816 in words is "one trillion, three hundred ninety-seven billion, six hundred three million, one hundred fifty-four thousand, eight hundred sixteen".