2078547511679 has 4 divisors (see below), whose sum is σ = 2200815012384. Its totient is φ = 1956280010976.

The previous prime is 2078547511603. The next prime is 2078547511697. The reversal of 2078547511679 is 9761157458702.

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

It is a cyclic number.

It is not a de Polignac number, because 2078547511679 - 2⁸ = 2078547511423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078547511879) 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, 61133750327 + ... + 61133750360.

It is an arithmetic number, because the mean of its divisors is an integer number (550203753096).

Almost surely, 2^{2078547511679} is an apocalyptic number.

2078547511679 is a deficient number, since it is larger than the sum of its proper divisors (122267500705).

2078547511679 is a wasteful number, since it uses less digits than its factorization.

2078547511679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122267500704.

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 2078547511679 in words is "two trillion, seventy-eight billion, five hundred forty-seven million, five hundred eleven thousand, six hundred seventy-nine".