21770355626315 has 16 divisors (see below), whose sum is σ = 26253962317440. Its totient is φ = 17330039838720.

The previous prime is 21770355626311. The next prime is 21770355626353. The reversal of 21770355626315 is 51362655307712.

It is not a de Polignac number, because 21770355626315 - 2² = 21770355626311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21770355626311) 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, 5473166 + ... + 8572995.

It is an arithmetic number, because the mean of its divisors is an integer number (1640872644840).

Almost surely, 2^{21770355626315} is an apocalyptic number.

21770355626315 is a deficient number, since it is larger than the sum of its proper divisors (4483606691125).

21770355626315 is a wasteful number, since it uses less digits than its factorization.

21770355626315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14047702.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 21770355626315 in words is "twenty-one trillion, seven hundred seventy billion, three hundred fifty-five million, six hundred twenty-six thousand, three hundred fifteen".