26157840721251 has 16 divisors (see below), whose sum is σ = 35583003199488. Its totient is φ = 17088344776800.

The previous prime is 26157840721237. The next prime is 26157840721261. The reversal of 26157840721251 is 15212704875162.

It is not a de Polignac number, because 26157840721251 - 2⁷ = 26157840721123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26157840721194 and 26157840721203.

It is not an unprimeable number, because it can be changed into a prime (26157840721211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340638340 + ... + 340715121.

It is an arithmetic number, because the mean of its divisors is an integer number (2223937699968).

Almost surely, 2^{26157840721251} is an apocalyptic number.

26157840721251 is a deficient number, since it is larger than the sum of its proper divisors (9425162478237).

26157840721251 is a wasteful number, since it uses less digits than its factorization.

26157840721251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681353722.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 26157840721251 in words is "twenty-six trillion, one hundred fifty-seven billion, eight hundred forty million, seven hundred twenty-one thousand, two hundred fifty-one".