61551051206 has 16 divisors (see below), whose sum is σ = 92555445840. Its totient is φ = 30699315360.

The previous prime is 61551051161. The next prime is 61551051227. The reversal of 61551051206 is 60215015516.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613060 + ... + 1650776.

It is an arithmetic number, because the mean of its divisors is an integer number (5784715365).

Almost surely, 2^61551051206 is an apocalyptic number.

61551051206 is a deficient number, since it is larger than the sum of its proper divisors (31004394634).

61551051206 is a wasteful number, since it uses less digits than its factorization.

61551051206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39719.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 61551051206 in words is "sixty-one billion, five hundred fifty-one million, fifty-one thousand, two hundred six".