7140690478 has 4 divisors (see below), whose sum is σ = 10711035720. Its totient is φ = 3570345238.

The previous prime is 7140690457. The next prime is 7140690481. The reversal of 7140690478 is 8740960417.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1785172618 + ... + 1785172621.

It is an arithmetic number, because the mean of its divisors is an integer number (2677758930).

Almost surely, 2^7140690478 is an apocalyptic number.

7140690478 is a deficient number, since it is larger than the sum of its proper divisors (3570345242).

7140690478 is a wasteful number, since it uses less digits than its factorization.

7140690478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570345241.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 7140690478 is about 84502.6063385030. The cubic root of 7140690478 is about 1925.6620405052.

The spelling of 7140690478 in words is "seven billion, one hundred forty million, six hundred ninety thousand, four hundred seventy-eight".