11537725378 has 4 divisors (see below), whose sum is σ = 17306588070. Its totient is φ = 5768862688.

The previous prime is 11537725373. The next prime is 11537725387. The reversal of 11537725378 is 87352773511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87352773511 = 45491 ⋅1920221.

It can be written as a sum of positive squares in only one way, i.e., 6165861529 + 5371863849 = 78523^2 + 73293^2 .

It is not an unprimeable number, because it can be changed into a prime (11537725373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2884431343 + ... + 2884431346.

Almost surely, 2^11537725378 is an apocalyptic number.

11537725378 is a deficient number, since it is larger than the sum of its proper divisors (5768862692).

11537725378 is an equidigital number, since it uses as much as digits as its factorization.

11537725378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768862691.

The product of its digits is 1234800, while the sum is 49.

The spelling of 11537725378 in words is "eleven billion, five hundred thirty-seven million, seven hundred twenty-five thousand, three hundred seventy-eight".