264787401867 has 8 divisors (see below), whose sum is σ = 353057657040. Its totient is φ = 176521040640.

The previous prime is 264787401847. The next prime is 264787401869. The reversal of 264787401867 is 768104787462.

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

It is not a de Polignac number, because 264787401867 - 2⁸ = 264787401611 is a prime.

It is a super-3 number, since 3×264787401867³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 264787401867.

It is not an unprimeable number, because it can be changed into a prime (264787401869) 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, 810942 + ... + 1089587.

It is an arithmetic number, because the mean of its divisors is an integer number (44132207130).

Almost surely, 2^264787401867 is an apocalyptic number.

264787401867 is a deficient number, since it is larger than the sum of its proper divisors (88270255173).

264787401867 is a wasteful number, since it uses less digits than its factorization.

264787401867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946973.

The product of its (nonzero) digits is 25288704, while the sum is 60.

The spelling of 264787401867 in words is "two hundred sixty-four billion, seven hundred eighty-seven million, four hundred one thousand, eight hundred sixty-seven".