1549249394077 has 48 divisors (see below), whose sum is σ = 1984208486400. Its totient is φ = 1196049576960.

The previous prime is 1549249394057. The next prime is 1549249394081. The reversal of 1549249394077 is 7704939429451.

It is not a de Polignac number, because 1549249394077 - 2¹¹ = 1549249392029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1549249394057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302644324 + ... + 302649442.

It is an arithmetic number, because the mean of its divisors is an integer number (41337676800).

Almost surely, 2^{1549249394077} is an apocalyptic number.

It is an amenable number.

1549249394077 is a deficient number, since it is larger than the sum of its proper divisors (434959092323).

1549249394077 is a wasteful number, since it uses less digits than its factorization.

1549249394077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226 (or 10219 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 64.

The spelling of 1549249394077 in words is "one trillion, five hundred forty-nine billion, two hundred forty-nine million, three hundred ninety-four thousand, seventy-seven".