1415526478081 has 3 divisors (see below), whose sum is σ = 1415527667841. Its totient is φ = 1415525288322.

The previous prime is 1415526478073. The next prime is 1415526478117. The reversal of 1415526478081 is 1808746255141.

It is a happy number.

The square root of 1415526478081 is 1189759.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1415526478081 - 2³ = 1415526478073 is a prime.

It is a super-2 number, since 2×1415526478081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1415526478181) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 594880 + ... + 1784638.

It is an arithmetic number, because the mean of its divisors is an integer number (471842555947).

Almost surely, 2^{1415526478081} is an apocalyptic number.

1415526478081 is the 1189759-th square number.

1415526478081 is the 594880-th centered octagonal number.

It is an amenable number.

1415526478081 is a deficient number, since it is larger than the sum of its proper divisors (1189760).

1415526478081 is an frugal number, since it uses more digits than its factorization.

1415526478081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379518 (or 1189759 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 1415526478081 in words is "one trillion, four hundred fifteen billion, five hundred twenty-six million, four hundred seventy-eight thousand, eighty-one".