61022444381 has 8 divisors (see below), whose sum is σ = 64236837600. Its totient is φ = 57808319760.

The previous prime is 61022444369. The next prime is 61022444387. The reversal of 61022444381 is 18344422016.

It is a happy number.

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 61022444381 - 2¹⁴ = 61022427997 is a prime.

It is a super-2 number, since 2×61022444381² (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 (61022444387) 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, 540071 + ... + 643211.

It is an arithmetic number, because the mean of its divisors is an integer number (8029604700).

Almost surely, 2^61022444381 is an apocalyptic number.

It is an amenable number.

61022444381 is a deficient number, since it is larger than the sum of its proper divisors (3214393219).

61022444381 is a wasteful number, since it uses less digits than its factorization.

61022444381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134299.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 61022444381 its reverse (18344422016), we get a palindrome (79366866397).

The spelling of 61022444381 in words is "sixty-one billion, twenty-two million, four hundred forty-four thousand, three hundred eighty-one".