12602257720 has 64 divisors (see below), whose sum is σ = 31361591520. Its totient is φ = 4527373824.

The previous prime is 12602257667. The next prime is 12602257741. The reversal of 12602257720 is 2775220621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308262 + ... + 346741.

Almost surely, 2^12602257720 is an apocalyptic number.

12602257720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12602257720 is an abundant number, since it is smaller than the sum of its proper divisors (18759333800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12602257720 is a wasteful number, since it uses less digits than its factorization.

12602257720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655064 (or 655060 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 12602257720 in words is "twelve billion, six hundred two million, two hundred fifty-seven thousand, seven hundred twenty".