1523540801461 has 4 divisors (see below), whose sum is σ = 1741189487392. Its totient is φ = 1305892115532.

The previous prime is 1523540801441. The next prime is 1523540801513. The reversal of 1523540801461 is 1641080453251.

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 1523540801461 - 2²⁹ = 1523003930549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523540801441) 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, 108824342955 + ... + 108824342968.

It is an arithmetic number, because the mean of its divisors is an integer number (435297371848).

Almost surely, 2^{1523540801461} is an apocalyptic number.

It is an amenable number.

1523540801461 is a deficient number, since it is larger than the sum of its proper divisors (217648685931).

1523540801461 is an equidigital number, since it uses as much as digits as its factorization.

1523540801461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217648685930.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 1523540801461 in words is "one trillion, five hundred twenty-three billion, five hundred forty million, eight hundred one thousand, four hundred sixty-one".