49390173121 has 27 divisors (see below), whose sum is σ = 52296592257. Its totient is φ = 46643521320.

The previous prime is 49390173023. The next prime is 49390173149. The reversal of 49390173121 is 12137109394.

The square root of 49390173121 is 222239.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 49390173121 - 2¹¹ = 49390171073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49390873121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 461590350 + ... + 461590456.

Almost surely, 2^49390173121 is an apocalyptic number.

49390173121 is the 222239-th square number.

49390173121 is the 111120-th centered octagonal number.

It is an amenable number.

49390173121 is a deficient number, since it is larger than the sum of its proper divisors (2906419136).

49390173121 is an frugal number, since it uses more digits than its factorization.

49390173121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 49390173121 in words is "forty-nine billion, three hundred ninety million, one hundred seventy-three thousand, one hundred twenty-one".