51206766285 has 64 divisors (see below), whose sum is σ = 84661724160. Its totient is φ = 26417664000.

The previous prime is 51206766277. The next prime is 51206766341. The reversal of 51206766285 is 58266760215.

It is a happy number.

It is not a de Polignac number, because 51206766285 - 2³ = 51206766277 is a prime.

It is a super-2 number, since 2×51206766285² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20310825 + ... + 20313345.

It is an arithmetic number, because the mean of its divisors is an integer number (1322839440).

Almost surely, 2^51206766285 is an apocalyptic number.

It is an amenable number.

51206766285 is a deficient number, since it is larger than the sum of its proper divisors (33454957875).

51206766285 is a wasteful number, since it uses less digits than its factorization.

51206766285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 51206766285 in words is "fifty-one billion, two hundred six million, seven hundred sixty-six thousand, two hundred eighty-five".