28157911980153 has 8 divisors (see below), whose sum is σ = 37548336806400. Its totient is φ = 18769714237008.

The previous prime is 28157911980131. The next prime is 28157911980157. The reversal of 28157911980153 is 35108911975182.

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

It is not a de Polignac number, because 28157911980153 - 2⁶ = 28157911980089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28157911980157) 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, 556741273 + ... + 556791846.

It is an arithmetic number, because the mean of its divisors is an integer number (4693542100800).

Almost surely, 2^{28157911980153} is an apocalyptic number.

It is an amenable number.

28157911980153 is a deficient number, since it is larger than the sum of its proper divisors (9390424826247).

28157911980153 is a wasteful number, since it uses less digits than its factorization.

28157911980153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113541551.

The product of its (nonzero) digits is 5443200, while the sum is 60.

The spelling of 28157911980153 in words is "twenty-eight trillion, one hundred fifty-seven billion, nine hundred eleven million, nine hundred eighty thousand, one hundred fifty-three".