26516461551 has 64 divisors (see below), whose sum is σ = 38124226560. Its totient is φ = 16368168960.

The previous prime is 26516461549. The next prime is 26516461553. The reversal of 26516461551 is 15516461562.

It is an interprime number because it is at equal distance from previous prime (26516461549) and next prime (26516461553).

It is not a de Polignac number, because 26516461551 - 2¹ = 26516461549 is a prime.

It is a super-2 number, since 2×26516461551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26516461553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30868560 + ... + 30869418.

It is an arithmetic number, because the mean of its divisors is an integer number (595691040).

Almost surely, 2^26516461551 is an apocalyptic number.

26516461551 is a deficient number, since it is larger than the sum of its proper divisors (11607765009).

26516461551 is a wasteful number, since it uses less digits than its factorization.

26516461551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 216000, while the sum is 42.

The spelling of 26516461551 in words is "twenty-six billion, five hundred sixteen million, four hundred sixty-one thousand, five hundred fifty-one".