863651342572 has 24 divisors (see below), whose sum is σ = 1551948254640. Its totient is φ = 420287831040.

The previous prime is 863651342569. The next prime is 863651342597. The reversal of 863651342572 is 275243156368.

It is a super-3 number, since 3×863651342572³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6215493 + ... + 6352924.

It is an arithmetic number, because the mean of its divisors is an integer number (64664510610).

Almost surely, 2^863651342572 is an apocalyptic number.

863651342572 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

863651342572 is a deficient number, since it is larger than the sum of its proper divisors (688296912068).

863651342572 is a wasteful number, since it uses less digits than its factorization.

863651342572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568881 (or 12568879 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The spelling of 863651342572 in words is "eight hundred sixty-three billion, six hundred fifty-one million, three hundred forty-two thousand, five hundred seventy-two".