1361215214451 has 32 divisors (see below), whose sum is σ = 2136435713280. Its totient is φ = 853617356928.

The previous prime is 1361215214371. The next prime is 1361215214483. The reversal of 1361215214451 is 1544125121631.

1361215214451 is a `hidden beast` number, since 1 + 3 + 6 + 121 + 521 + 4 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 1361215214451 - 2¹⁹ = 1361214690163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361215214351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9541 + ... + 1650006.

It is an arithmetic number, because the mean of its divisors is an integer number (66763616040).

Almost surely, 2^{1361215214451} is an apocalyptic number.

1361215214451 is a deficient number, since it is larger than the sum of its proper divisors (775220498829).

1361215214451 is a wasteful number, since it uses less digits than its factorization.

1361215214451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661360 (or 1661354 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The spelling of 1361215214451 in words is "one trillion, three hundred sixty-one billion, two hundred fifteen million, two hundred fourteen thousand, four hundred fifty-one".