2157246763777 has 8 divisors (see below), whose sum is σ = 2465643897792. Its totient is φ = 1848904386000.

The previous prime is 2157246763751. The next prime is 2157246763843. The reversal of 2157246763777 is 7773676427512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2157246763777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157246761777) 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, 13604599 + ... + 13762252.

It is an arithmetic number, because the mean of its divisors is an integer number (308205487224).

Almost surely, 2^{2157246763777} is an apocalyptic number.

It is an amenable number.

2157246763777 is a deficient number, since it is larger than the sum of its proper divisors (308397134015).

2157246763777 is a wasteful number, since it uses less digits than its factorization.

2157246763777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27378119.

The product of its digits is 145212480, while the sum is 64.

The spelling of 2157246763777 in words is "two trillion, one hundred fifty-seven billion, two hundred forty-six million, seven hundred sixty-three thousand, seven hundred seventy-seven".