61003323551 has 8 divisors (see below), whose sum is σ = 61806611520. Its totient is φ = 60200813088.

The previous prime is 61003323547. The next prime is 61003323553. The reversal of 61003323551 is 15532330016.

61003323551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61003323551 - 2² = 61003323547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61003323553) 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, 35576 + ... + 351101.

It is an arithmetic number, because the mean of its divisors is an integer number (7725826440).

Almost surely, 2^61003323551 is an apocalyptic number.

61003323551 is a deficient number, since it is larger than the sum of its proper divisors (803287969).

61003323551 is a wasteful number, since it uses less digits than its factorization.

61003323551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388753.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 61003323551 its reverse (15532330016), we get a palindrome (76535653567).

The spelling of 61003323551 in words is "sixty-one billion, three million, three hundred twenty-three thousand, five hundred fifty-one".