1366121740541 has 8 divisors (see below), whose sum is σ = 1465155393120. Its totient is φ = 1269801338832.

The previous prime is 1366121740531. The next prime is 1366121740561. The reversal of 1366121740541 is 1450471216631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1366121740541 - 2³⁴ = 1348941871357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366121740531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678311675 + ... + 678313688.

It is an arithmetic number, because the mean of its divisors is an integer number (183144424140).

Almost surely, 2^{1366121740541} is an apocalyptic number.

It is an amenable number.

1366121740541 is a deficient number, since it is larger than the sum of its proper divisors (99033652579).

1366121740541 is a wasteful number, since it uses less digits than its factorization.

1366121740541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356625435.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 1366121740541 in words is "one trillion, three hundred sixty-six billion, one hundred twenty-one million, seven hundred forty thousand, five hundred forty-one".