11621261351 has 12 divisors (see below), whose sum is σ = 13681489752. Its totient is φ = 9841064688.

The previous prime is 11621261347. The next prime is 11621261411. The reversal of 11621261351 is 15316212611.

It is not a de Polignac number, because 11621261351 - 2² = 11621261347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621261551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1424660 + ... + 1432793.

It is an arithmetic number, because the mean of its divisors is an integer number (1140124146).

Almost surely, 2^11621261351 is an apocalyptic number.

11621261351 is a deficient number, since it is larger than the sum of its proper divisors (2060228401).

11621261351 is an equidigital number, since it uses as much as digits as its factorization.

11621261351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857550 (or 2857543 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

Adding to 11621261351 its reverse (15316212611), we get a palindrome (26937473962).

The spelling of 11621261351 in words is "eleven billion, six hundred twenty-one million, two hundred sixty-one thousand, three hundred fifty-one".