49115203721 has 8 divisors (see below), whose sum is σ = 50047008840. Its totient is φ = 48183587712.

The previous prime is 49115203717. The next prime is 49115203747. The reversal of 49115203721 is 12730251194.

It can be written as a sum of positive squares in 4 ways, for example, as 1094617225 + 48020586496 = 33085^2 + 219136^2 .

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 49115203721 - 2² = 49115203717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49115203751) 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, 547295 + ... + 630683.

It is an arithmetic number, because the mean of its divisors is an integer number (6255876105).

Almost surely, 2^49115203721 is an apocalyptic number.

It is an amenable number.

49115203721 is a deficient number, since it is larger than the sum of its proper divisors (931805119).

49115203721 is a wasteful number, since it uses less digits than its factorization.

49115203721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94555.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 49115203721 in words is "forty-nine billion, one hundred fifteen million, two hundred three thousand, seven hundred twenty-one".