6140978415 has 64 divisors (see below), whose sum is σ = 12825953280. Its totient is φ = 2748401280.

The previous prime is 6140978407. The next prime is 6140978419. The reversal of 6140978415 is 5148790416.

6140978415 is a `hidden beast` number, since 6 + 140 + 97 + 8 + 415 = 666.

It is not a de Polignac number, because 6140978415 - 2³ = 6140978407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140978419) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139747 + ... + 178356.

It is an arithmetic number, because the mean of its divisors is an integer number (200405520).

Almost surely, 2^6140978415 is an apocalyptic number.

6140978415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6140978415 is an abundant number, since it is smaller than the sum of its proper divisors (6684974865).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6140978415 is a wasteful number, since it uses less digits than its factorization.

6140978415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318141 (or 318135 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 6140978415 is about 78364.3950719968. The cubic root of 6140978415 is about 1831.2424913358.

The spelling of 6140978415 in words is "six billion, one hundred forty million, nine hundred seventy-eight thousand, four hundred fifteen".