1377273545541 has 6 divisors (see below), whose sum is σ = 1989395121350. Its totient is φ = 918182363688.

The previous prime is 1377273545539. The next prime is 1377273545567. The reversal of 1377273545541 is 1455453727731.

1377273545541 is a `hidden beast` number, since 1 + 3 + 7 + 7 + 27 + 35 + 45 + 541 = 666.

It can be written as a sum of positive squares in only one way, i.e., 916136122500 + 461137423041 = 957150^2 + 679071^2 .

It is not a de Polignac number, because 1377273545541 - 2¹ = 1377273545539 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 (1377273545581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76515196966 + ... + 76515196983.

Almost surely, 2^{1377273545541} is an apocalyptic number.

It is an amenable number.

1377273545541 is a deficient number, since it is larger than the sum of its proper divisors (612121575809).

1377273545541 is a wasteful number, since it uses less digits than its factorization.

1377273545541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153030393955 (or 153030393952 counting only the distinct ones).

The product of its digits is 12348000, while the sum is 54.

The spelling of 1377273545541 in words is "one trillion, three hundred seventy-seven billion, two hundred seventy-three million, five hundred forty-five thousand, five hundred forty-one".