11974890159501 has 4 divisors (see below), whose sum is σ = 15966520212672. Its totient is φ = 7983260106332.

The previous prime is 11974890159391. The next prime is 11974890159503. The reversal of 11974890159501 is 10595109847911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11974890159501 - 2¹⁸ = 11974889897357 is a prime.

It is a super-2 number, since 2×11974890159501² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11974890159503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995815026581 + ... + 1995815026586.

It is an arithmetic number, because the mean of its divisors is an integer number (3991630053168).

Almost surely, 2^{11974890159501} is an apocalyptic number.

It is an amenable number.

11974890159501 is a deficient number, since it is larger than the sum of its proper divisors (3991630053171).

11974890159501 is an equidigital number, since it uses as much as digits as its factorization.

11974890159501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991630053170.

The product of its (nonzero) digits is 4082400, while the sum is 60.

The spelling of 11974890159501 in words is "eleven trillion, nine hundred seventy-four billion, eight hundred ninety million, one hundred fifty-nine thousand, five hundred one".