139897224968 has 36 divisors (see below), whose sum is σ = 263933918685. Its totient is φ = 69517513344.

The previous prime is 139897224967. The next prime is 139897225009. The reversal of 139897224968 is 869422798931.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 138025624324 + 1871600644 = 371518^2 + 43262^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=264478.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139897224898 and 139897224907.

It is not an unprimeable number, because it can be changed into a prime (139897224967) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 235914080 + ... + 235914672.

Almost surely, 2^139897224968 is an apocalyptic number.

It is an amenable number.

139897224968 is a deficient number, since it is larger than the sum of its proper divisors (124036693717).

139897224968 is an frugal number, since it uses more digits than its factorization.

139897224968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 818 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 68.

The spelling of 139897224968 in words is "one hundred thirty-nine billion, eight hundred ninety-seven million, two hundred twenty-four thousand, nine hundred sixty-eight".