51623333877 has 4 divisors (see below), whose sum is σ = 68831111840. Its totient is φ = 34415555916.

The previous prime is 51623333873. The next prime is 51623333911. The reversal of 51623333877 is 77833332615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51623333877 - 2² = 51623333873 is a prime.

It is a super-2 number, since 2×51623333877² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51623333873) 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, 8603888977 + ... + 8603888982.

It is an arithmetic number, because the mean of its divisors is an integer number (17207777960).

Almost surely, 2^51623333877 is an apocalyptic number.

It is an amenable number.

51623333877 is a deficient number, since it is larger than the sum of its proper divisors (17207777963).

51623333877 is a wasteful number, since it uses less digits than its factorization.

51623333877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17207777962.

The product of its digits is 1905120, while the sum is 48.

The spelling of 51623333877 in words is "fifty-one billion, six hundred twenty-three million, three hundred thirty-three thousand, eight hundred seventy-seven".