16211855651 has 2 divisors, whose sum is σ = 16211855652. Its totient is φ = 16211855650.

The previous prime is 16211855599. The next prime is 16211855663. The reversal of 16211855651 is 15655811261.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15655811261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16211855651 - 2²² = 16207661347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16211855599 and 16211855608.

It is not a weakly prime, because it can be changed into another prime (16211855251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105927825 + 8105927826.

It is an arithmetic number, because the mean of its divisors is an integer number (8105927826).

Almost surely, 2^16211855651 is an apocalyptic number.

16211855651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211855651 is an equidigital number, since it uses as much as digits as its factorization.

16211855651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 41.

The spelling of 16211855651 in words is "sixteen billion, two hundred eleven million, eight hundred fifty-five thousand, six hundred fifty-one".