61010010551 has 4 divisors (see below), whose sum is σ = 69725726352. Its totient is φ = 52294294752.

The previous prime is 61010010547. The next prime is 61010010563. The reversal of 61010010551 is 15501001016.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61010010551 - 2² = 61010010547 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 (61010010541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4357857890 + ... + 4357857903.

It is an arithmetic number, because the mean of its divisors is an integer number (17431431588).

Almost surely, 2^61010010551 is an apocalyptic number.

61010010551 is a deficient number, since it is larger than the sum of its proper divisors (8715715801).

61010010551 is an equidigital number, since it uses as much as digits as its factorization.

61010010551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715715800.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 61010010551 its reverse (15501001016), we get a palindrome (76511011567).

The spelling of 61010010551 in words is "sixty-one billion, ten million, ten thousand, five hundred fifty-one".