21770264467 has 16 divisors (see below), whose sum is σ = 26341205760. Its totient is φ = 17575905312.

The previous prime is 21770264459. The next prime is 21770264491. The reversal of 21770264467 is 76446207712.

It is not a de Polignac number, because 21770264467 - 2³ = 21770264459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21770264567) 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, 450073 + ... + 496090.

It is an arithmetic number, because the mean of its divisors is an integer number (1646325360).

Almost surely, 2^21770264467 is an apocalyptic number.

21770264467 is a deficient number, since it is larger than the sum of its proper divisors (4570941293).

21770264467 is a wasteful number, since it uses less digits than its factorization.

21770264467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946362.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 21770264467 in words is "twenty-one billion, seven hundred seventy million, two hundred sixty-four thousand, four hundred sixty-seven".