1015166787811 has 8 divisors (see below), whose sum is σ = 1117804722624. Its totient is φ = 914253860520.

The previous prime is 1015166787757. The next prime is 1015166787857. The reversal of 1015166787811 is 1187876615101.

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

It is not a de Polignac number, because 1015166787811 - 2³¹ = 1013019304163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015166787871) 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, 431250645 + ... + 431252998.

It is an arithmetic number, because the mean of its divisors is an integer number (139725590328).

Almost surely, 2^{1015166787811} is an apocalyptic number.

1015166787811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1015166787811 is a deficient number, since it is larger than the sum of its proper divisors (102637934813).

1015166787811 is a wasteful number, since it uses less digits than its factorization.

1015166787811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862503761.

The product of its (nonzero) digits is 564480, while the sum is 52.

The spelling of 1015166787811 in words is "one trillion, fifteen billion, one hundred sixty-six million, seven hundred eighty-seven thousand, eight hundred eleven".