61011011050550 has 48 divisors (see below), whose sum is σ = 123798275175600. Its totient is φ = 22185573580800.

The previous prime is 61011011050519. The next prime is 61011011050567. The reversal of 61011011050550 is 5505011011016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52649786 + ... + 53796114.

It is an arithmetic number, because the mean of its divisors is an integer number (2579130732825).

Almost surely, 2^{61011011050550} is an apocalyptic number.

61011011050550 is an abundant number, since it is smaller than the sum of its proper divisors (62787264125050).

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

61011011050550 is a wasteful number, since it uses less digits than its factorization.

61011011050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243121 (or 1243116 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 61011011050550 its reverse (5505011011016), we get a palindrome (66516022061566).

The spelling of 61011011050550 in words is "sixty-one trillion, eleven billion, eleven million, fifty thousand, five hundred fifty".