6155516381 has 8 divisors (see below), whose sum is σ = 7340740224. Its totient is φ = 5046758640.

The previous prime is 6155516377. The next prime is 6155516387. The reversal of 6155516381 is 1836155516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6155516381 - 2² = 6155516377 is a prime.

It is a super-2 number, since 2×6155516381² = 75780763833518674322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6155516387) 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, 19116350 + ... + 19116671.

It is an arithmetic number, because the mean of its divisors is an integer number (917592528).

Almost surely, 2^6155516381 is an apocalyptic number.

It is an amenable number.

6155516381 is a deficient number, since it is larger than the sum of its proper divisors (1185223843).

6155516381 is a wasteful number, since it uses less digits than its factorization.

6155516381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38233051.

The product of its digits is 108000, while the sum is 41.

The square root of 6155516381 is about 78457.0989840945. The cubic root of 6155516381 is about 1832.6864284634.

The spelling of 6155516381 in words is "six billion, one hundred fifty-five million, five hundred sixteen thousand, three hundred eighty-one".