51612747401 has 16 divisors (see below), whose sum is σ = 53306240400. Its totient is φ = 49954867200.

The previous prime is 51612747383. The next prime is 51612747413. The reversal of 51612747401 is 10474721615.

It can be written as a sum of positive squares in 8 ways, for example, as 172239376 + 51440508025 = 13124^2 + 226805^2 .

It is a cyclic number.

It is not a de Polignac number, because 51612747401 - 2¹⁸ = 51612485257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51612747491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802175 + ... + 864123.

It is an arithmetic number, because the mean of its divisors is an integer number (3331640025).

Almost surely, 2^51612747401 is an apocalyptic number.

It is an amenable number.

51612747401 is a deficient number, since it is larger than the sum of its proper divisors (1693492999).

51612747401 is a wasteful number, since it uses less digits than its factorization.

51612747401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62236.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 51612747401 in words is "fifty-one billion, six hundred twelve million, seven hundred forty-seven thousand, four hundred one".