1202455715661 has 24 divisors (see below), whose sum is σ = 1781649777024. Its totient is φ = 781124667840.

The previous prime is 1202455715639. The next prime is 1202455715683. The reversal of 1202455715661 is 1665175542021.

1202455715661 is a `hidden beast` number, since 1 + 2 + 0 + 24 + 5 + 571 + 56 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1202455715639) and next prime (1202455715683).

It is not a de Polignac number, because 1202455715661 - 2¹⁰ = 1202455714637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202455715621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6165400 + ... + 6357441.

It is an arithmetic number, because the mean of its divisors is an integer number (74235407376).

Almost surely, 2^{1202455715661} is an apocalyptic number.

It is an amenable number.

1202455715661 is a deficient number, since it is larger than the sum of its proper divisors (579194061363).

1202455715661 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 1202455715661 = (4227665511510)₉.

1202455715661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12523121 (or 12523118 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 1202455715661 in words is "one trillion, two hundred two billion, four hundred fifty-five million, seven hundred fifteen thousand, six hundred sixty-one".