78405050487 has 32 divisors (see below), whose sum is σ = 108537053184. Its totient is φ = 50291589600.

The previous prime is 78405050483. The next prime is 78405050491.

78405050487 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (78405050483) and next prime (78405050491).

It is not a de Polignac number, because 78405050487 - 2² = 78405050483 is a prime.

It is a super-2 number, since 2×78405050487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78405050483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29178058 + ... + 29180744.

It is an arithmetic number, because the mean of its divisors is an integer number (3391782912).

Almost surely, 2^78405050487 is an apocalyptic number.

78405050487 is a deficient number, since it is larger than the sum of its proper divisors (30132002697).

78405050487 is a wasteful number, since it uses less digits than its factorization.

78405050487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419.

The product of its (nonzero) digits is 1254400, while the sum is 48.

The spelling of 78405050487 in words is "seventy-eight billion, four hundred five million, fifty thousand, four hundred eighty-seven".