26478598100 has 18 divisors (see below), whose sum is σ = 57458558094. Its totient is φ = 10591439200.

The previous prime is 26478598099. The next prime is 26478598109. The reversal of 26478598100 is 189587462.

It can be written as a sum of positive squares in 3 ways, for example, as 7829418256 + 18649179844 = 88484^2 + 136562^2 .

It is a super-2 number, since 2×26478598100² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478598109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132392891 + ... + 132393090.

Almost surely, 2^26478598100 is an apocalyptic number.

26478598100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26478598100 is an abundant number, since it is smaller than the sum of its proper divisors (30979959994).

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

26478598100 is a wasteful number, since it uses less digits than its factorization.

26478598100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264785995 (or 264785988 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 26478598100 in words is "twenty-six billion, four hundred seventy-eight million, five hundred ninety-eight thousand, one hundred".