20155490136354 has 8 divisors (see below), whose sum is σ = 40310980272720. Its totient is φ = 6718496712116.

The previous prime is 20155490136281. The next prime is 20155490136367. The reversal of 20155490136354 is 45363109455102.

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

20155490136354 is an admirable number.

It is a super-3 number, since 3×20155490136354³ (a number of 41 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679624178024 + ... + 1679624178035.

It is an arithmetic number, because the mean of its divisors is an integer number (5038872534090).

Almost surely, 2^{20155490136354} is an apocalyptic number.

20155490136354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20155490136354 is a wasteful number, since it uses less digits than its factorization.

20155490136354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359248356064.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 20155490136354 in words is "twenty trillion, one hundred fifty-five billion, four hundred ninety million, one hundred thirty-six thousand, three hundred fifty-four".