61453542311550 has 192 divisors, whose sum is σ = 171464731269120. Its totient is φ = 16384219596000.

The previous prime is 61453542311533. The next prime is 61453542311599. The reversal of 61453542311550 is 5511324535416.

It is a happy number.

61453542311550 is a `hidden beast` number, since 6 + 1 + 4 + 5 + 354 + 231 + 15 + 50 = 666.

It is a super-2 number, since 2×61453542311550² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 61453542311496 and 61453542311505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 552271219 + ... + 552382481.

It is an arithmetic number, because the mean of its divisors is an integer number (893045475360).

Almost surely, 2^{61453542311550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61453542311550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85732365634560).

61453542311550 is an abundant number, since it is smaller than the sum of its proper divisors (110011188957570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61453542311550 is a wasteful number, since it uses less digits than its factorization.

61453542311550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116347 (or 116324 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

Adding to 61453542311550 its reverse (5511324535416), we get a palindrome (66964866846966).

The spelling of 61453542311550 in words is "sixty-one trillion, four hundred fifty-three billion, five hundred forty-two million, three hundred eleven thousand, five hundred fifty".