28977990125479 has 2 divisors, whose sum is σ = 28977990125480. Its totient is φ = 28977990125478.

The previous prime is 28977990125449. The next prime is 28977990125537. The reversal of 28977990125479 is 97452109977982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28977990125479 - 2²³ = 28977981736871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28977990125399 and 28977990125408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28977990125449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14488995062739 + 14488995062740.

It is an arithmetic number, because the mean of its divisors is an integer number (14488995062740).

Almost surely, 2^{28977990125479} is an apocalyptic number.

28977990125479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28977990125479 is an equidigital number, since it uses as much as digits as its factorization.

28977990125479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440270720, while the sum is 79.

The spelling of 28977990125479 in words is "twenty-eight trillion, nine hundred seventy-seven billion, nine hundred ninety million, one hundred twenty-five thousand, four hundred seventy-nine".