61750877421 has 16 divisors (see below), whose sum is σ = 84566931584. Its totient is φ = 40051226304.

The previous prime is 61750877417. The next prime is 61750877423. The reversal of 61750877421 is 12477805716.

It is not a de Polignac number, because 61750877421 - 2² = 61750877417 is a prime.

It is a super-2 number, since 2×61750877421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61750877423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2560200 + ... + 2584206.

It is an arithmetic number, because the mean of its divisors is an integer number (5285433224).

Almost surely, 2^61750877421 is an apocalyptic number.

It is an amenable number.

61750877421 is a deficient number, since it is larger than the sum of its proper divisors (22816054163).

61750877421 is a wasteful number, since it uses less digits than its factorization.

61750877421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47220.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 61750877421 in words is "sixty-one billion, seven hundred fifty million, eight hundred seventy-seven thousand, four hundred twenty-one".