5495978642 has 16 divisors (see below), whose sum is σ = 10278194112. Its totient is φ = 2141290320.

The previous prime is 5495978629. The next prime is 5495978647. The reversal of 5495978642 is 2468795945.

It is a happy number.

It is a super-3 number, since 3×5495978642³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5495978647) 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, 17843933 + ... + 17844240.

It is an arithmetic number, because the mean of its divisors is an integer number (642387132).

Almost surely, 2^5495978642 is an apocalyptic number.

5495978642 is a deficient number, since it is larger than the sum of its proper divisors (4782215470).

5495978642 is a wasteful number, since it uses less digits than its factorization.

5495978642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35688193.

The product of its digits is 21772800, while the sum is 59.

The square root of 5495978642 is about 74134.8679232654. The cubic root of 5495978642 is about 1764.7438568766.

The spelling of 5495978642 in words is "five billion, four hundred ninety-five million, nine hundred seventy-eight thousand, six hundred forty-two".