1397511304420 has 384 divisors, whose sum is σ = 3915062968320. Its totient is φ = 406183680000.

The previous prime is 1397511304307. The next prime is 1397511304421. The reversal of 1397511304420 is 244031157931.

It is not an unprimeable number, because it can be changed into a prime (1397511304421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1214170845 + ... + 1214171995.

It is an arithmetic number, because the mean of its divisors is an integer number (10195476480).

Almost surely, 2^{1397511304420} is an apocalyptic number.

1397511304420 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 1397511304420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957531484160).

1397511304420 is an abundant number, since it is smaller than the sum of its proper divisors (2517551663900).

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

1397511304420 is a wasteful number, since it uses less digits than its factorization.

1397511304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 1397511304420 in words is "one trillion, three hundred ninety-seven billion, five hundred eleven million, three hundred four thousand, four hundred twenty".