26472477397 has 4 divisors (see below), whose sum is σ = 26544609856. Its totient is φ = 26400344940.

The previous prime is 26472477391. The next prime is 26472477407. The reversal of 26472477397 is 79377427462.

It is a happy number.

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: 79377427462 = 2 ⋅39688713731.

It is a cyclic number.

It is not a de Polignac number, because 26472477397 - 2²³ = 26464088789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26472477391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36065679 + ... + 36066412.

It is an arithmetic number, because the mean of its divisors is an integer number (6636152464).

Almost surely, 2^26472477397 is an apocalyptic number.

It is an amenable number.

26472477397 is a deficient number, since it is larger than the sum of its proper divisors (72132459).

26472477397 is an equidigital number, since it uses as much as digits as its factorization.

26472477397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72132458.

The product of its digits is 24893568, while the sum is 58.

The spelling of 26472477397 in words is "twenty-six billion, four hundred seventy-two million, four hundred seventy-seven thousand, three hundred ninety-seven".