2142648615757 has 4 divisors (see below), whose sum is σ = 2307467740060. Its totient is φ = 1977829491456.

The previous prime is 2142648615733. The next prime is 2142648615827. The reversal of 2142648615757 is 7575168462412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1343035303236 + 799613312521 = 1158894^2 + 894211^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2142648615757 is a prime.

It is a super-3 number, since 3×2142648615757³ (a number of 38 digits) contains 333 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 (2142648615727) 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, 82409562132 + ... + 82409562157.

It is an arithmetic number, because the mean of its divisors is an integer number (576866935015).

Almost surely, 2^{2142648615757} is an apocalyptic number.

It is an amenable number.

2142648615757 is a deficient number, since it is larger than the sum of its proper divisors (164819124303).

2142648615757 is a wasteful number, since it uses less digits than its factorization.

2142648615757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164819124302.

The product of its digits is 22579200, while the sum is 58.

The spelling of 2142648615757 in words is "two trillion, one hundred forty-two billion, six hundred forty-eight million, six hundred fifteen thousand, seven hundred fifty-seven".