21607270612 has 6 divisors (see below), whose sum is σ = 37812723578. Its totient is φ = 10803635304.

The previous prime is 21607270609. The next prime is 21607270679.

21607270612 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 17935637776 + 3671632836 = 133924^2 + 60594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700908823 + ... + 2700908830.

Almost surely, 2^21607270612 is an apocalyptic number.

It is an amenable number.

21607270612 is a deficient number, since it is larger than the sum of its proper divisors (16205452966).

21607270612 is a wasteful number, since it uses less digits than its factorization.

21607270612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401817657 (or 5401817655 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 21607270612 in words is "twenty-one billion, six hundred seven million, two hundred seventy thousand, six hundred twelve".