121762063513 has 4 divisors (see below), whose sum is σ = 121780416100. Its totient is φ = 121743710928.

The previous prime is 121762063499. The next prime is 121762063537. The reversal of 121762063513 is 315360267121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315360267121 = 2141 ⋅147295781.

It can be written as a sum of positive squares in 2 ways, for example, as 16060999824 + 105701063689 = 126732^2 + 325117^2 .

It is a cyclic number.

It is not a de Polignac number, because 121762063513 - 2⁹ = 121762063001 is a prime.

It is a super-2 number, since 2×121762063513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121762063543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9166338 + ... + 9179611.

It is an arithmetic number, because the mean of its divisors is an integer number (30445104025).

Almost surely, 2^121762063513 is an apocalyptic number.

It is an amenable number.

121762063513 is a deficient number, since it is larger than the sum of its proper divisors (18352587).

121762063513 is an equidigital number, since it uses as much as digits as its factorization.

121762063513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18352586.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 121762063513 in words is "one hundred twenty-one billion, seven hundred sixty-two million, sixty-three thousand, five hundred thirteen".