61422033720531 has 32 divisors (see below), whose sum is σ = 90473118962688. Its totient is φ = 36754368452640.

The previous prime is 61422033720517. The next prime is 61422033720559. The reversal of 61422033720531 is 13502733022416.

It is a happy number.

It is not a de Polignac number, because 61422033720531 - 2³¹ = 61419886236883 is a prime.

It is a super-2 number, since 2×61422033720531² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61422033720531.

It is not an unprimeable number, because it can be changed into a prime (61422033720031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2435161 + ... + 11347866.

It is an arithmetic number, because the mean of its divisors is an integer number (2827284967584).

Almost surely, 2^{61422033720531} is an apocalyptic number.

61422033720531 is a deficient number, since it is larger than the sum of its proper divisors (29051085242157).

61422033720531 is a wasteful number, since it uses less digits than its factorization.

61422033720531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784751.

The product of its (nonzero) digits is 181440, while the sum is 39.

Adding to 61422033720531 its reverse (13502733022416), we get a palindrome (74924766742947).

The spelling of 61422033720531 in words is "sixty-one trillion, four hundred twenty-two billion, thirty-three million, seven hundred twenty thousand, five hundred thirty-one".