53787891715 has 8 divisors (see below), whose sum is σ = 64576921968. Its totient is φ = 43009345440.

The previous prime is 53787891623. The next prime is 53787891719. The reversal of 53787891715 is 51719878735.

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

It is not a de Polignac number, because 53787891715 - 2⁹ = 53787891203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53787891719) 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, 2609701 + ... + 2630230.

It is an arithmetic number, because the mean of its divisors is an integer number (8072115246).

Almost surely, 2^53787891715 is an apocalyptic number.

53787891715 is a deficient number, since it is larger than the sum of its proper divisors (10789030253).

53787891715 is a wasteful number, since it uses less digits than its factorization.

53787891715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241989.

The product of its digits is 14817600, while the sum is 61.

The spelling of 53787891715 in words is "fifty-three billion, seven hundred eighty-seven million, eight hundred ninety-one thousand, seven hundred fifteen".