49057581387 has 6 divisors (see below), whose sum is σ = 65410620028. Its totient is φ = 32704798504.

The previous prime is 49057581367. The next prime is 49057581401. The reversal of 49057581387 is 78318575094.

It is a happy number.

49057581387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49057581387 - 2¹¹ = 49057579339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49057581367) 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, 319693 + ... + 447569.

Almost surely, 2^49057581387 is an apocalyptic number.

49057581387 is a deficient number, since it is larger than the sum of its proper divisors (16353038641).

49057581387 is an frugal number, since it uses more digits than its factorization.

49057581387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255757 (or 127880 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 49057581387 in words is "forty-nine billion, fifty-seven million, five hundred eighty-one thousand, three hundred eighty-seven".