49387709540 has 24 divisors (see below), whose sum is σ = 111692205240. Its totient is φ = 18235461888.

The previous prime is 49387709513. The next prime is 49387709573. The reversal of 49387709540 is 4590778394.

It can be written as a sum of positive squares in 4 ways, for example, as 1698758656 + 47688950884 = 41216^2 + 218378^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94976105 + ... + 94976624.

It is an arithmetic number, because the mean of its divisors is an integer number (4653841885).

Almost surely, 2^49387709540 is an apocalyptic number.

It is an amenable number.

49387709540 is an abundant number, since it is smaller than the sum of its proper divisors (62304495700).

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

49387709540 is a wasteful number, since it uses less digits than its factorization.

49387709540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189952751 (or 189952749 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 49387709540 in words is "forty-nine billion, three hundred eighty-seven million, seven hundred nine thousand, five hundred forty".