1554145103138 has 16 divisors (see below), whose sum is σ = 2351335275576. Its totient is φ = 770392128000.

The previous prime is 1554145103101. The next prime is 1554145103141. The reversal of 1554145103138 is 8313015414551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1435124933089 + 119020170049 = 1197967^2 + 344993^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1554145103095 and 1554145103104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6240113 + ... + 6484388.

Almost surely, 2^{1554145103138} is an apocalyptic number.

1554145103138 is a deficient number, since it is larger than the sum of its proper divisors (797190172438).

1554145103138 is a wasteful number, since it uses less digits than its factorization.

1554145103138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12725029.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 1554145103138 in words is "one trillion, five hundred fifty-four billion, one hundred forty-five million, one hundred three thousand, one hundred thirty-eight".