24797970493 has 4 divisors (see below), whose sum is σ = 24798419008. Its totient is φ = 24797521980.

The previous prime is 24797970469. The next prime is 24797970497. The reversal of 24797970493 is 39407979742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39407979742 = 2 ⋅19703989871.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24797970493 is a prime.

It is a super-2 number, since 2×24797970493² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24797970497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127371 + ... + 256552.

It is an arithmetic number, because the mean of its divisors is an integer number (6199604752).

Almost surely, 2^24797970493 is an apocalyptic number.

It is an amenable number.

24797970493 is a deficient number, since it is larger than the sum of its proper divisors (448515).

24797970493 is an equidigital number, since it uses as much as digits as its factorization.

24797970493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448514.

The product of its (nonzero) digits is 24004512, while the sum is 61.

The spelling of 24797970493 in words is "twenty-four billion, seven hundred ninety-seven million, nine hundred seventy thousand, four hundred ninety-three".