1361201715511 has 8 divisors (see below), whose sum is σ = 1486136250000. Its totient is φ = 1236465335040.

The previous prime is 1361201715493. The next prime is 1361201715521. The reversal of 1361201715511 is 1155171021631.

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 1361201715511 - 2⁵ = 1361201715479 is a prime.

It is a super-2 number, since 2×1361201715511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361201715521) 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, 49524136 + ... + 49551613.

It is an arithmetic number, because the mean of its divisors is an integer number (185767031250).

Almost surely, 2^{1361201715511} is an apocalyptic number.

1361201715511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1361201715511 is a deficient number, since it is larger than the sum of its proper divisors (124934534489).

1361201715511 is a wasteful number, since it uses less digits than its factorization.

1361201715511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99077009.

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 1361201715511 in words is "one trillion, three hundred sixty-one billion, two hundred one million, seven hundred fifteen thousand, five hundred eleven".