155013668 has 6 divisors (see below), whose sum is σ = 271273926. Its totient is φ = 77506832.

The previous prime is 155013643. The next prime is 155013697. The reversal of 155013668 is 866310551.

It can be written as a sum of positive squares in only one way, i.e., 134745664 + 20268004 = 11608^2 + 4502^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19376705 + ... + 19376712.

It is an arithmetic number, because the mean of its divisors is an integer number (45212321).

Almost surely, 2^155013668 is an apocalyptic number.

It is an amenable number.

155013668 is a deficient number, since it is larger than the sum of its proper divisors (116260258).

155013668 is a wasteful number, since it uses less digits than its factorization.

155013668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38753421 (or 38753419 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 155013668 is about 12450.4485059776. The cubic root of 155013668 is about 537.1843243197.

The spelling of 155013668 in words is "one hundred fifty-five million, thirteen thousand, six hundred sixty-eight".