49142465761 has 9 divisors (see below), whose sum is σ = 50785945329. Its totient is φ = 47550574500.

The previous prime is 49142465759. The next prime is 49142465789. The reversal of 49142465761 is 16756424194.

The square root of 49142465761 is 221681.

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

It is not a de Polignac number, because 49142465761 - 2¹ = 49142465759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49142465261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6868536 + ... + 6875686.

Almost surely, 2^49142465761 is an apocalyptic number.

49142465761 is the 221681-st square number.

49142465761 is the 110841-st centered octagonal number.

It is an amenable number.

49142465761 is a deficient number, since it is larger than the sum of its proper divisors (1643479568).

49142465761 is an frugal number, since it uses more digits than its factorization.

49142465761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14364 (or 7182 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

Multiplying 49142465761 by its sum of digits (49), we get a square (2407980822289 = 1551767²).

The spelling of 49142465761 in words is "forty-nine billion, one hundred forty-two million, four hundred sixty-five thousand, seven hundred sixty-one".