201551106707 has 4 divisors (see below), whose sum is σ = 202354099416. Its totient is φ = 200748114000.

The previous prime is 201551106637. The next prime is 201551106719. The reversal of 201551106707 is 707601155102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201551106707 - 2³² = 197256139411 is a prime.

It is a super-2 number, since 2×201551106707² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201551106737) 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, 401495978 + ... + 401496479.

It is an arithmetic number, because the mean of its divisors is an integer number (50588524854).

Almost surely, 2^201551106707 is an apocalyptic number.

201551106707 is a deficient number, since it is larger than the sum of its proper divisors (802992709).

201551106707 is an equidigital number, since it uses as much as digits as its factorization.

201551106707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802992708.

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 201551106707 in words is "two hundred one billion, five hundred fifty-one million, one hundred six thousand, seven hundred seven".