1015261061551 has 8 divisors (see below), whose sum is σ = 1108538542800. Its totient is φ = 922147083840.

The previous prime is 1015261061501. The next prime is 1015261061569. The reversal of 1015261061551 is 1551601625101.

1015261061551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1015261061551 - 2²⁷ = 1015126843823 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 (1015261061501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40862896 + ... + 40887733.

It is an arithmetic number, because the mean of its divisors is an integer number (138567317850).

Almost surely, 2^{1015261061551} is an apocalyptic number.

1015261061551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1015261061551 is a deficient number, since it is larger than the sum of its proper divisors (93277481249).

1015261061551 is a wasteful number, since it uses less digits than its factorization.

1015261061551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81751769.

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 1015261061551 its reverse (1551601625101), we get a palindrome (2566862686652).

The spelling of 1015261061551 in words is "one trillion, fifteen billion, two hundred sixty-one million, sixty-one thousand, five hundred fifty-one".