26137821672 has 48 divisors (see below), whose sum is σ = 70867817280. Its totient is φ = 8703021600.

The previous prime is 26137821653. The next prime is 26137821683. The reversal of 26137821672 is 27612873162.

26137821672 is a `hidden beast` number, since 2 + 61 + 378 + 216 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133654 + ... + 264837.

It is an arithmetic number, because the mean of its divisors is an integer number (1476412860).

Almost surely, 2^26137821672 is an apocalyptic number.

It is an amenable number.

26137821672 is an abundant number, since it is smaller than the sum of its proper divisors (44729995608).

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

26137821672 is a wasteful number, since it uses less digits than its factorization.

26137821672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399414 (or 399407 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 26137821672 in words is "twenty-six billion, one hundred thirty-seven million, eight hundred twenty-one thousand, six hundred seventy-two".