26540730437 has 8 divisors (see below), whose sum is σ = 28586232696. Its totient is φ = 24495786432.

The previous prime is 26540730407. The next prime is 26540730439. The reversal of 26540730437 is 73403704562.

It can be written as a sum of positive squares in 4 ways, for example, as 156900676 + 26383829761 = 12526^2 + 162431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26540730437 - 2¹² = 26540726341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26540730394 and 26540730403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540730439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38078 + ... + 233519.

It is an arithmetic number, because the mean of its divisors is an integer number (3573279087).

Almost surely, 2^26540730437 is an apocalyptic number.

It is an amenable number.

26540730437 is a deficient number, since it is larger than the sum of its proper divisors (2045502259).

26540730437 is a wasteful number, since it uses less digits than its factorization.

26540730437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279127.

The product of its (nonzero) digits is 423360, while the sum is 41.

The spelling of 26540730437 in words is "twenty-six billion, five hundred forty million, seven hundred thirty thousand, four hundred thirty-seven".