21160200662465 has 32 divisors (see below), whose sum is σ = 26589916604160. Its totient is φ = 16134968070144.

The previous prime is 21160200662411. The next prime is 21160200662479. The reversal of 21160200662465 is 56426600206112.

It is a cyclic number.

It is not a de Polignac number, because 21160200662465 - 2⁶ = 21160200662401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68714006 + ... + 69021264.

It is an arithmetic number, because the mean of its divisors is an integer number (830934893880).

Almost surely, 2^{21160200662465} is an apocalyptic number.

It is an amenable number.

21160200662465 is a deficient number, since it is larger than the sum of its proper divisors (5429715941695).

21160200662465 is a wasteful number, since it uses less digits than its factorization.

21160200662465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309401.

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 21160200662465 its reverse (56426600206112), we get a palindrome (77586800868577).

The spelling of 21160200662465 in words is "twenty-one trillion, one hundred sixty billion, two hundred million, six hundred sixty-two thousand, four hundred sixty-five".