6121353478 has 4 divisors (see below), whose sum is σ = 9182030220. Its totient is φ = 3060676738.

The previous prime is 6121353457. The next prime is 6121353479. The reversal of 6121353478 is 8743531216.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6121353478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121353479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530338368 + ... + 1530338371.

It is an arithmetic number, because the mean of its divisors is an integer number (2295507555).

Almost surely, 2^6121353478 is an apocalyptic number.

6121353478 is a deficient number, since it is larger than the sum of its proper divisors (3060676742).

6121353478 is a wasteful number, since it uses less digits than its factorization.

6121353478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060676741.

The product of its digits is 120960, while the sum is 40.

The square root of 6121353478 is about 78239.0789695278. The cubic root of 6121353478 is about 1829.2896879987.

The spelling of 6121353478 in words is "six billion, one hundred twenty-one million, three hundred fifty-three thousand, four hundred seventy-eight".