5401811768461 has 4 divisors (see below), whose sum is σ = 5576063761024. Its totient is φ = 5227559775900.

The previous prime is 5401811768449. The next prime is 5401811768519. The reversal of 5401811768461 is 1648671181045.

It is a happy number.

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 5401811768461 - 2⁹ = 5401811767949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5401811768399 and 5401811768408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401811768401) 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, 87125996235 + ... + 87125996296.

It is an arithmetic number, because the mean of its divisors is an integer number (1394015940256).

Almost surely, 2^{5401811768461} is an apocalyptic number.

It is an amenable number.

5401811768461 is a deficient number, since it is larger than the sum of its proper divisors (174251992563).

5401811768461 is a wasteful number, since it uses less digits than its factorization.

5401811768461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174251992562.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 5401811768461 in words is "five trillion, four hundred one billion, eight hundred eleven million, seven hundred sixty-eight thousand, four hundred sixty-one".