1383711474640 has 80 divisors (see below), whose sum is σ = 3524280503040. Its totient is φ = 501062428160.

The previous prime is 1383711474619. The next prime is 1383711474641. The reversal of 1383711474640 is 464741173831.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383711474641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3079219 + ... + 3499858.

It is an arithmetic number, because the mean of its divisors is an integer number (44053506288).

Almost surely, 2^{1383711474640} is an apocalyptic number.

1383711474640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383711474640 is an abundant number, since it is smaller than the sum of its proper divisors (2140569028400).

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

1383711474640 is a wasteful number, since it uses less digits than its factorization.

1383711474640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579340 (or 6579334 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 1383711474640 in words is "one trillion, three hundred eighty-three billion, seven hundred eleven million, four hundred seventy-four thousand, six hundred forty".