264544315155421 has 8 divisors (see below), whose sum is σ = 305978966927424. Its totient is φ = 224020315070880.

The previous prime is 264544315155413. The next prime is 264544315155443. The reversal of 264544315155421 is 124551513445462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264544315155421 - 2³ = 264544315155413 is a prime.

It is a super-3 number, since 3×264544315155421³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264544315155451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227662921240 + ... + 227662922401.

It is an arithmetic number, because the mean of its divisors is an integer number (38247370865928).

Almost surely, 2^{264544315155421} is an apocalyptic number.

It is an amenable number.

264544315155421 is a deficient number, since it is larger than the sum of its proper divisors (41434651772003).

264544315155421 is an equidigital number, since it uses as much as digits as its factorization.

264544315155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455325843731.

The product of its digits is 11520000, while the sum is 52.

The spelling of 264544315155421 in words is "two hundred sixty-four trillion, five hundred forty-four billion, three hundred fifteen million, one hundred fifty-five thousand, four hundred twenty-one".