155616378 has 32 divisors (see below), whose sum is σ = 322660800. Its totient is φ = 49975296.

The previous prime is 155616371. The next prime is 155616397. The reversal of 155616378 is 873616551.

It is not an unprimeable number, because it can be changed into a prime (155616371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133225 + ... + 134387.

It is an arithmetic number, because the mean of its divisors is an integer number (10083150).

Almost surely, 2^155616378 is an apocalyptic number.

155616378 is an abundant number, since it is smaller than the sum of its proper divisors (167044422).

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

155616378 is a wasteful number, since it uses less digits than its factorization.

155616378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966.

The product of its digits is 151200, while the sum is 42.

The square root of 155616378 is about 12474.6293732519. The cubic root of 155616378 is about 537.8796343084.

The spelling of 155616378 in words is "one hundred fifty-five million, six hundred sixteen thousand, three hundred seventy-eight".