26464362540 has 144 divisors (see below), whose sum is σ = 93084746496. Its totient is φ = 5499077760.

The previous prime is 26464362539. The next prime is 26464362559. The reversal of 26464362540 is 4526346462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 26464362492 and 26464362501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209554 + ... + 311193.

Almost surely, 2^26464362540 is an apocalyptic number.

26464362540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26464362540 is an abundant number, since it is smaller than the sum of its proper divisors (66620383956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26464362540 is a wasteful number, since it uses less digits than its factorization.

26464362540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520788 (or 520775 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 26464362540 in words is "twenty-six billion, four hundred sixty-four million, three hundred sixty-two thousand, five hundred forty".