1396781210880 has 720 divisors, whose sum is σ = 5773100122944. Its totient is φ = 318690754560.

The previous prime is 1396781210879. The next prime is 1396781210893. The reversal of 1396781210880 is 880121876931.

1396781210880 is a `hidden beast` number, since 1 + 396 + 78 + 1 + 2 + 108 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 79 ways as a sum of consecutive naturals, for example, 19352139 + ... + 19424181.

Almost surely, 2^{1396781210880} is an apocalyptic number.

1396781210880 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 1396781210880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2886550061472).

1396781210880 is an abundant number, since it is smaller than the sum of its proper divisors (4376318912064).

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

1396781210880 is a wasteful number, since it uses less digits than its factorization.

1396781210880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72104 (or 72081 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 1396781210880 in words is "one trillion, three hundred ninety-six billion, seven hundred eighty-one million, two hundred ten thousand, eight hundred eighty".