51231366700829 has 32 divisors (see below), whose sum is σ = 62381841500160. Its totient is φ = 41122591278912.

The previous prime is 51231366700823. The next prime is 51231366700841. The reversal of 51231366700829 is 92800766313215.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51231366700829 - 2⁸ = 51231366700573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51231366700823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2443259 + ... + 10413080.

It is an arithmetic number, because the mean of its divisors is an integer number (1949432546880).

Almost surely, 2^{51231366700829} is an apocalyptic number.

It is an amenable number.

51231366700829 is a deficient number, since it is larger than the sum of its proper divisors (11150474799331).

51231366700829 is a wasteful number, since it uses less digits than its factorization.

51231366700829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856889.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 51231366700829 in words is "fifty-one trillion, two hundred thirty-one billion, three hundred sixty-six million, seven hundred thousand, eight hundred twenty-nine".