51625209701 has 8 divisors (see below), whose sum is σ = 55598435424. Its totient is φ = 47652277680.

The previous prime is 51625209689. The next prime is 51625209703. The reversal of 51625209701 is 10790252615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51625209701 - 2³⁰ = 50551467877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625209703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409166 + ... + 520256.

It is an arithmetic number, because the mean of its divisors is an integer number (6949804428).

Almost surely, 2^51625209701 is an apocalyptic number.

It is an amenable number.

51625209701 is a deficient number, since it is larger than the sum of its proper divisors (3973225723).

51625209701 is a wasteful number, since it uses less digits than its factorization.

51625209701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146851.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 51625209701 in words is "fifty-one billion, six hundred twenty-five million, two hundred nine thousand, seven hundred one".